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Standard VIII

Physics

Relative Motion

A force F is ...

Question

A force F is applied to a stationary block as shown below.
What is the direction of frictional force acting on the block?

Opposite to the direction of the applied force.

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Same direction as that of the applied force.

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Perpendicular to the direction of applied force.

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Non-contact force.

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Solution

The correct option is A
Opposite to the direction of the applied force.

Friction has a tendency to oppose relative motion. As the block has a tendency to move towards right because of the applied force, friction will act towards left, i.e., opposite to the applied force.

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Q. Multiple correct answers type
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and

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. A force of 7 N is being applied horizontally to the block. Mark the correct statement(s) regarding this situation.
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b. If the block is initially moving, then it will continue its motion forever if the force applied is in the direction of the motion of the block.
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A force F is applied to a stationary block as shown below. What is the direction of frictional force acting on the block?

The correct option is A Opposite to the direction of the applied force. Friction has a tendency to oppose relative motion. As the block has a tendency to move towards right because of the applied force, friction will act towards left, i.e., opposite to the applied force.

A force F is applied to a stationary block as shown below.
What is the direction of frictional force acting on the block?

The correct option is A
Opposite to the direction of the applied force.

Friction has a tendency to oppose relative motion. As the block has a tendency to move towards right because of the applied force, friction will act towards left, i.e., opposite to the applied force.