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Standard XII

Physics

Pure Rolling

A yo-yo, arra...

Question

A yo-yo, arranged as shown, rests on a frictionless surface. When a force $F$ is applied to the string, the yo-yo:

moves to the left and rotates counterclockwise.

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moves to the right and rotates counterclockwise.

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moves to the left and rotates clockwise.

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moves to the right and rotates clockwise.

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Solution

The correct option is B moves to the right and rotates counterclockwise.
As there is no friction, net force is $F$ which is towards right, hence it moves rightwards.
Torque due to this force will be in counterclockwise direction and hence, it rotates counterclockwise.

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A yo-yo, arranged as shown, rests on a frictionless surface. When a force F is applied to the string, the yo-yo:

The correct option is B moves to the right and rotates counterclockwise.As there is no friction, net force is F which is towards right, hence it moves rightwards. Torque due to this force will be in counterclockwise direction and hence, it rotates counterclockwise.

A yo-yo, arranged as shown, rests on a frictionless surface. When a force $F$ is applied to the string, the yo-yo:

The correct option is B moves to the right and rotates counterclockwise.
As there is no friction, net force is $F$ which is towards right, hence it moves rightwards.
Torque due to this force will be in counterclockwise direction and hence, it rotates counterclockwise.