Which of the following statements is correct? a) A ring and a uniform disk have

Question

Which of the following statements is correct?

a) A ring and a uniform disk have the same mass and radius. They therefore have the same rotational inertia.

b) The rotational inertia is independent of the location of the axis about which the rotation occurs.

c) The torque which a force exerts depends on the position at which the force is applied.

d) Two rings have the same mass but one ring has a diameter twice as large as the the other. The same force F is applied to each ring on the circumference of the ring and and in the direction tangent to the ring. The smaller ring will experience the smaller angular acceleration.

Explanation / Answer

Here , for the correct statement

the torque about a point is given as

Torque = r X F

r is the position of the point of application

F is the force vector

Hence , the correct option is

c) The torque which a force exerts depends on the position at which the force is applied.

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