Answers
This question involves the concept of tension, centripetal force, centrifugal force, and weight.
The tension of the stone at the highest point is "0 N".
The centrifugal force always acts away from the circle. The tension always acts toward the support that is the center of the circle in this case. When the stone is at its lowest point, the centrifugal force, and the weight of the stone, both act downward. But the tension is pointing in the upward direction. Hence, the equilibrium equation will be:
[tex]Tension = Weight\ + \ Cenrifugal\ Force\\T = W + F_c\\T = 2\ W\ (given)\\2\ W = W+F_c\\F_c = 2\ W - W\\F_c = W[/tex]
Now, we consider the stone at the top position. Here, the centrifugal force will act in the upward direction (away from the center of the circle), while the weight and tension will be acting in the downward direction. Thus, the equilibrium equation, in this case, will be:
[tex]F_c = W+T\\T=F_c-W\\T = W-W\\[/tex]
T = 0 N
Learn more about tension here:
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The attached picture shows the free body diagram of the stone at different locations.
Related Questions
A sphere of radius r =34.5 cm and mass m = 1.80 kg starts from rest and rolls without slipping down a 30.0∘ incline that is 10.0 m long.
A.) calculate its translational speed when it reaches the bottom.
B.) Calculate its rotational speed when it reaches the bottom.
C.) what is the ratio of translational to rotational kinetic energy at the bottom?
Answers
Answer:
Explanation:
It depends on the construction of the sphere.
Let's ASSUME it is thin wall sphere with a moment of inertia (2/3)mR²
The Change in potential energy will equal the change in kinetic energy
mgh = ½mv² + ½Iω²
mgh = ½mv² + ½((2/3)mR²)(v/R)²
2gh = v² + 2/3v²
2gh = 5/3v²
v = √((6/5)gh)
v = √((6/5)(9.81)(10.0sin30.0))
A) v = 7.67 m/s
B) ω = 7.67/0.345 = 22.2 radians/s
C) ½mv² / ½Iω² = mv²/Iω² = mv²/((2/3)mR²)(v/R)² = 3/2
Which statement describes how nuclear power generation systems work?
O A.
The heat for the electricity generation process comes from nuclear fusion.
ов.
Electricity is generated directly when two atoms split into smaller ones.
O C.
The heat for the electricity generation process comes from nuclear fission.
OD.
Electricity is generated directly when two atoms join together.
Answers
Answer:
c- heat for electricity generation process comes from nuclear fission
Explanation:
nuclear fission is splitting of atoms to release energy held at nucleus of atoms
Match up the following set of words with their definitions.
1) a measure of the force of gravity on an object, expressed as mass of the object times acceleration due to gravity
2) the amount of matter an object is made up of measured in grams 3) a push or pull
4) a numerical quantity, expressed by standard unit/s of measure
5) a number (rate) with a direction; a quantity that has both magnitude (measurable amount) and direction
6) refers to the application of more than one force on an object and, therefore, the combined effect (sum of forces)
net force
mass
Vector
Force
Magnitude
weight
Answers
Answer:
weightmassforcemagnitudevector net forcePLS HELP ME WITH THIS
Answers
Answer:
C
Explanation:
C
A grand prix racing car has an average lap speed of 180km/h.Each lap is 4.5 km. How many laps will it complete in 1.5 hours
Answers
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Lap speed = 180 km/h
Each lap is about 4.5 km
So, number of laps it will complete in 1.5 hour :
[tex] \dfrac{180}{4.5} \times 1.5[/tex][tex] \dfrac{180}{3} [/tex][tex]60 \: \: laps[/tex]During a certain period of time, the speedometer of a car reads a constant
60 km/h. Does this indicate a constant speed? A constant velocity?
Answers
Please help, I need this in by today
Answers
1.) Force of friction on the cart pointing towards the left
2.) The force of tension of the rope on the cart pointing towards the right
3.) Normal force of the surface on the cart pointing up
4.) Gravitational force of the Earth on the cart pointing downwards
5.) If the cart is not moving, then the friction force acting on the cart must be equal than the tensile force that acts on the cart.
This can be explained using Newton’s First Law: An object at rest will remain at rest, and an object an motion will remain in motion unless acted upon by another force.
(However you’re really only looking at the first part)
Explanation:
Hmm, it is a little difficult to see since the top of the picture is cut off.
There are a few things I will assume:
1.) There is a cart attached to a rope/string, with no other object present other than the weight on the right
2.) You are working with friction
Hollywood studios get in trouble for a lack of diversity in their casting decisions. In order to remedy that, they create a computational model to find promising new actors. The computational model compares prospective actors to famous ones and chooses prospective actors that are the most similar to famous ones. What is a true statement about this computational model?
1. It will be effective and efficient at eliminating bias from casting decisions because computers are more objective than people.
2. Though it will choose from the applicants quicker than humans could, it will repeat the biases of the original casting decisions.
3. It is not a good idea to use computational models in the casting process as computers often deviate from the equations they're given. 4. While it would help eliminate bias from casting decisions, it is inefficient because it would be quicker for humans to choose the applicants.
Answers
Hollywood studios get in trouble for a lack of diversity in their casting decisions. The true statement about this computational model is that it will be effective and efficient at eliminating bais from casting.
Option 1 is correct.
The lack of diversity in Hollywood studios casting decisions results in the inability to select and choose the right actors for a specified role play.
The use of a computational model makes use of a computer program that studies and compares the prospective actors to famous ones and chooses prospective actors that are most similar to famous ones.
This is the best result to can be achieved and derived in making decisions in the diversity of casting because the computational model provides actors that are most effective and efficient thereby elimination the bias from casting decisions. This model is objective and it's not based on emotional decisions, unlike people.
Learn more about computational models here;
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write two examples of chemical properties and explain what they are
Answers
Examples
Flammability
toxicity
solubility
Acidity
Electronegativity
Which kind of bond forms ions?
Answers
Answer:
Ionic bond
Explanation:
Hope it helps ya
help me besties ok thx
Answers
Answer:
[tex]1 \\ 0.5 \times 500 \times 20 \times 20 \\ \ 2 \\ 0.5 \times 0.6 \times 100 \times 100 \\ 3 \\ 1000 \times 0.5 \times 10 \times 10 \\ 1000 \times 0.5 \times 20 \times 20 \\ 1000 \times 0.5 \times 30 \times 30 \\ 4 \\ 0.5 \times 40000 \times 30 \times 30 \\ 5 \\ \sqrt{ \frac{2}{0.1 \times 0.5} } [/tex]
Question 5 (4 points)
Piedra Vista High School is 35 degrees north of east, 3.31 miles away from FHS. How many miles north and east is it? Round to the nearest
tenth of a mile.
North:
miles
East:
miles
Blank 1:
Blank 2:
Answers
Answer:
ayussssaasssassbfjdbskgsvdksbjabsdvsjvsjhjsjajbdnjsjnsnsnsnbfndksbsjjjsjdhjjsjjsjkjsjsjbdhsjabdhdhksbshsjsjisisisjdbbdjsjsjjebwnnwjbsnbhejshvjrebbdjndnebensjHELLONODNDIDBIDDBDUDBDIjsjsExplanation:
jshshjabsjbrnejdjdhjsndjdhfisjshsidsnsndgjsbdjdvsjsvdudhwjgdusbsuwgshidsbhsgsuydisksvdudh
A plane is traveling with an air velocity of 720 kilometers/hour due east. It experiences a headwind of 16 kilometers/hour. Find the resultant velocity and direction of the plane with respect to the ground.
Answers
A racecar begins at rest and accelerates to 25 m/s at a rate of 6.25 m/s2. What distance does the racecar cover?
a.
2 m
b.
156 m
c.
4 m
d.
50 m
Answers
Answer:
d.
50 m
Explanation:
v² = u² + 2as
s = (v² - u²) / 2a
s =(25² - 0²) / (2(6.25))
s = 50 m
the game in the suburbs and rural areas of the Philippines is/are called_____??
Answers
Answer:
Games such as Patintero, Tumbang Preso, Piko, Sipa, Turumpo, and many others, are still played daily in neighborhoods.
Explanation:
Hope this helps... Maybe
Một chất điểm dao động điều hoà theo phương trình x = 5cos(2πt)cm, chu kì dao động của chất
điểm là
A. 1s. B. 2s. C. 0,5s. D. 10s.
Answers
Answer:
D. is the answer trust me:))))
PLEASE HELP!!
What process is illustrated in the figure?
Answers
Answer: A
Explanation:
We can only tell the earth is rotating almost 960 miles an hour if we
a
look at other people around us as a reference point.
b
look at mountains far away from us as a reference point.
c
use a reference that is not on the earth, like the sun or stars.
Answers
Answer:
C
It is C i have to type this because i need 20 characters.
what characteristic feature do all anxiety disorders share?
Answers
Answer:
Something they all share is excessive worry that disturbs their normalized living style.
a ball thrown horizontally with the velocity of 20 m\s from a 20 m building .what is the time
Answers
Answer:2.02s
Explanation:
At the y component, the tract of the ball is free falling body. The initial velocity at y component is 0 m/s.
Height = 1/2 * g * t^2
20 = 1/2 * 9.8 * t^2
t = (20 * 2 / 9.8)^1/2, t = 2.02s
Why are there fewer elements than there are compounds?
Answers
Compounds are 2 or more elements that are combined together to form a new substance. Why are there are more compounds than elements? Because elements can combine with more than just one element, thus creating a whole series of combination possibilities.
the law of conservation of energy also states that energy can be transformed ________
what will be there?
Answers
1. A bicyclist travels for 1.5 hours at an average speed of 23 km/h. How far does the bicyclist travel
in that time?
Answers
Explanation:
23 km/hr x 1.5 hrs = 34.5 km
34.5 km = 34500 meters
drop down menu to complete the statement.
___ are made of amino
____ are used by all organisms to store the transmit genetic information
____ are used by organisms for tissue growth and repair
options are 1. proteins 2. nucleic acids
Answers
Answer:
The answer to the first question is protein
What four processes allow for the change of thermodynamics properties according to the first law
Answers
Answer:
The four types of thermodynamic process are isobaric, isochoric, isothermal and adiabatic.
Which of the following types of stars is hottest?
A
B
C
D
Answers
Answer:
graph b
Explanation:
Look at the figure below and calculate the length of side y.
A. 8.5
B. 17
12
y
C. 6
O D. 12
45
Х
Answers
Answer:
I want to say a because you want to subtract and simplify
Making simplificafions, such as neglecting friction or not including all particles involved in an interaction, often makes computational models less accurate. Why are these simplifications made?
1. All initial values entered into the model are simply best guesses or estimates. By including more factors, more estimates are included and the inaccuracies compound as a result.
2. Simplifications actually tend to make models more accurate, not less accurate, because the simpler the model, the less chance there is for calculation error or other mistakes. 3. Computational models don't need to be accurate in order to be informative.
4. The effects of the simplifications are often relatively small, the computations may become too complex if all factors are included. or it isn't possible to know the initial values of all factors well enough to include them
Answers
Option 4. The effects of the simplifications are often relatively small, the computations may become too complex if all factors are included, or it isn’t possible to know the initial values of all factors well enough to include them
Computational models often make our derivations and complex studies get simplified. However these models ignores some factors which can only be determines practically.Hence, the statement in 4th option better indicates the need of simplifications.
What is computational model?A computational model is used to predict som complex structures or performing complex derivations and calculations using computer programmes and simulations.
For instance, there are various computational softwares such Gaussian to study the structural and electronic properties of molecules such as bond parameters, enthalpies etc. Similarly, the Hartree method for the calculation of energy levels can be performed using computational models.
These models simplifies and make more easier to understand a parameter or any structure or equation. However some factors which cannot included in these computations make a chance of inaccuracy in them.
In fact they cannot predicted by computations but can only be determined practically. But to make the study simpler adn near perfection we use these models without too much complex factors. Hence, option 4 is correct.
To find more on computational models, refer here:
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Un hamster fait tourner sa cage de 27cm de diamètre a raison de 14tours par minute .quel est le module de l accélération centripète d un morceau de nourriture collé sur la paroi extérieure de la cage ?
Answers
Answer:
Explanation:
a_c = ω²R
14 rev/min (2π rad/rev)(1 min/60 s) = 1.466 rad/s
a_c = 1.466²(0.27/2)
a_c = 0.29 m/s²
Le hamster est lent
Ralph is mowing the back yard with a push mower downward with a force of 20.0 N at an
angle of 30.0° to the horizontal. What are the horizontal and vertical components of the force
exerted by Ralph?
Answers
Answer:
Horizontal component = (10N) · sin (20°) = 3.42... N (rounded)
Vertical component = (10N) · cos (20°) = 9.39... N (rounded)
Explanation: