# Centrifugal and Centripetal Forces Quiz

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| By Tanya Mishra
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Tanya Mishra
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Quizzes Created: 637 | Total Attempts: 756,868
Questions: 10 | Attempts: 294  Settings  The centrifugal and centripetal forces are essential concepts in the field of physics. If you are well aware of the concepts, we encourage you to take this quiz and test your knowledge. Can you ace the quiz with flying colors? Give it a try to find it out yourself! All the questions are compulsory, so make sure to read all the questions carefully before answering. We encourage you to take the quiz for your upcoming physics examination preparations. There is no time bar, so that you can attempt it multiple times. Good Luck & keep learning!

• 1.

### Which of the following means "center seeking"?

• A.

Centripetal

• B.

Centrifuge

• C.

Centrifugal

• D.

Centenarian

A. Centripetal
Explanation
Centripetal means "center seeking" as it refers to the force that pulls an object towards the center of its circular path. This force allows objects to move in a curved path rather than a straight line. Centrifuge, centrifugal, and centenarian do not have the same meaning as centripetal and are unrelated to the concept of being "center seeking".

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• 2.

### Which of the following best describes centripetal forces?

• A.

Forces used to make objects fly into space

• B.

Forces that push people apart

• C.

Forces that pull people together

• D.

None of the above

C. Forces that pull people together
Explanation
Centripetal forces are forces that pull objects or people together. These forces are directed towards the center of rotation or the axis of circular motion. In the context of this question, centripetal forces are responsible for keeping people or objects moving in a circular path, pulling them towards the center of the circle. This is why the correct answer describes centripetal forces as forces that pull people together.

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• 3.

### What's the formula for Centrifugal Force?

• A.

F = m * a

• B.

F = mv2/r

• C.

F = – mv2/r

• D.

None of the above

C. F = – mv2/r
Explanation
The formula for Centrifugal Force is F = -mv^2/r. This formula represents the force exerted on an object moving in a circular path, directed away from the center of the circle. The negative sign indicates that the force is directed outward, opposite to the centripetal force that keeps the object in the circular path. The variables in the formula represent mass (m), velocity (v), and radius (r).

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• 4.

### What's the formula for centripetal force?

• A.

F = m * a

• B.

F = mv2/r

• C.

F = – mv2/r

• D.

None of the above

B. F = mv2/r
Explanation
The formula for centripetal force is F = mv2/r. This formula states that the centripetal force (F) is equal to the mass of the object (m) multiplied by the square of its velocity (v2), divided by the radius of the circular path (r). This formula shows that the centripetal force is directly proportional to the mass and velocity of the object, and inversely proportional to the radius of the circular path.

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• 5.

### Centrifugal force is dependent upon which of the following factors?

• A.

Density

• B.

Temperature and viscosity

• C.

The distance at which the object/ particles are displaced

• D.

All of the above

D. All of the above
Explanation
Centrifugal force is dependent upon density, temperature and viscosity, as well as the distance at which the object or particles are displaced. Density affects the magnitude of centrifugal force, with higher density resulting in greater force. Temperature and viscosity also play a role, as higher temperatures and lower viscosities can increase centrifugal force. Additionally, the distance at which the object or particles are displaced affects the strength of centrifugal force, with greater displacement resulting in stronger force. Therefore, all of these factors contribute to the overall dependence of centrifugal force.

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• 6.

### If the centripetal force is removed, what will happen to an object moving in a circular motion?

• A.

It will continue to move in circular motion

• B.

It will fly outward from the center of the circular motion

• C.

It will fall immediately towards the ground due to gravity

• D.

It will move in a straight line

D. It will move in a straight line
Explanation
When the centripetal force is removed, the object will no longer experience the inward force that keeps it moving in a circular path. As a result, it will move in a straight line according to Newton's first law of motion, which states that an object in motion will continue moving in a straight line at a constant velocity unless acted upon by an external force.

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• 7.

### Which of the following means "center fleeing"?

• A.

Centripetal

• B.

Centrifuge

• C.

Centrifugal

• D.

None of the above

C. Centrifugal
Explanation
The term "center fleeing" refers to the concept of moving away from the center. Among the given options, the term that best matches this meaning is "Centrifugal." Centrifugal force is a force that acts outward from the center of rotation, causing objects to move away from the center. Therefore, "Centrifugal" is the correct answer in this context.

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• 8.

### What increases the centripetal force on an object?

• A.

Increasing the velocity

• B.

Decreasing the mass

• C.

Increasing the acceleration

• D.

None of the above

A. Increasing the velocity
Explanation
Increasing the velocity of an object increases the centripetal force acting on it. Centripetal force is the force that keeps an object moving in a circular path. It is directly proportional to the velocity of the object. As the velocity increases, the object moves faster along the circular path, requiring a greater centripetal force to keep it in that path. Therefore, increasing the velocity increases the centripetal force on the object.

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• 9.

### Decreasing the radius when making a sharp turn allows one to do what?

• A.

Increase the friction

• B.

Decrease speed

• C.

Keep a high speed

• D.

None of the above

C. Keep a high speed
Explanation
When making a sharp turn, decreasing the radius allows one to keep a high speed. This is because reducing the radius of the turn allows the vehicle to take a tighter turn, which in turn allows the driver to maintain a higher speed without losing control or skidding. By decreasing the radius, the vehicle can navigate the turn more efficiently and smoothly, enabling the driver to maintain a higher speed throughout the maneuver.

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• 10.

### If one swings a bucket of water attached to a string in a circle above their head. What keeps the water in the bucket?

• A.

Friction

• B.

Inertia

• C.

Centripetal Force

• D.

Centrifugal Force

B. Inertia
Explanation
Inertia is the correct answer because it is the property of matter that resists changes in its state of motion. When the bucket of water is swung in a circle, the water wants to continue moving in a straight line due to its inertia. However, the string attached to the bucket provides the necessary centripetal force, pulling the water towards the center of the circle and preventing it from spilling out.

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