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Byju's Answer

Standard VIII

Physics

Application of Force

A wooden rod ...

Question

A wooden rod is pivoted horizontally at the point $P$ on the wall. The rod is free to move about pivoted point $P$ . A vertically upward force of $10 N$ is applied at point $A$ , and then after some time, the force is transferred to $B$ . Then which of the following statements are correct?

When force is applied at

A

, the rod will move in counterclockwise.

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When force is applied at

B

, the rod will move in counterclockwise.

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When force is applied at

A

, the rod will move in clockwise.

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When force is applied at

B

, the rod will move in clockwise.

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Solution

The correct option is C When force is applied at $A$ , the rod will move in clockwise.
Case 1: When vertically upward force is applied at $A$ .
The rod will move in the clockwise direction.

Case 2: When vertically upward force is applied at $B$ .
The rod will move in the counterclockwise.

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Similar questions

Q. A wooden rod is pivoted horizontally at the point

P

on the wall. The rod is free to move about pivoted point

P

. A vertically upward force of

10 N

is applied at point

A

, and then after some time, the force is transferred to

B

. Then which of the following statements are correct?

Q. The density of a rod gradually decreases from one end to the other. It is pivoted at an end so that it can move about a vertical axis through the pivot. A horizontal force

F

is applied on the free end in a direction perpendiclar to the rod. The quantities, that do not depend on which end of the rod is pivoted, are :

Q. The density of a rod gradually decreases from one end to the other. It is pivoted at an end so that it can move about a vertical axis though the pivot. A horizontal force F is applied on the free end in a direction perpendicular to the rod. The quantities, that do not depend on which end of the rod is pivoted, are
(a) angular acceleration
(b) angular velocity when the rod completes one rotation
(c) angular momentum when the rod completes one rotation
(d) torque of the applied force.

A rod is pivoted at a point. A force of $20 N$ is applied at a distance of $20 c m$ from the pivot perpendicular to the rod as shown in the figure below. Calculate the moment of force about the pivot.

Q. Two forces each of magnitude

10 N

act vertically upwards and downwards respectively at the two ends of a uniform rod of length

4 m

which is pivoted at its mid point as shown in Fig. Determine the magnitude of resultant moment of forces about the pivot

O

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A wooden rod is pivoted horizontally at the point P on the wall. The rod is free to move about pivoted point P. A vertically upward force of 10N is applied at point A, and then after some time, the force is transferred to B. Then which of the following statements are correct?

The correct option is C When force is applied at A, the rod will move in clockwise.Case 1: When vertically upward force is applied at A. The rod will move in the clockwise direction. Case 2: When vertically upward force is applied at B. The rod will move in the counterclockwise.

A wooden rod is pivoted horizontally at the point $P$ on the wall. The rod is free to move about pivoted point $P$ . A vertically upward force of $10 N$ is applied at point $A$ , and then after some time, the force is transferred to $B$ . Then which of the following statements are correct?

The correct option is C When force is applied at $A$ , the rod will move in clockwise.
Case 1: When vertically upward force is applied at $A$ .
The rod will move in the clockwise direction.

Case 2: When vertically upward force is applied at $B$ .
The rod will move in the counterclockwise.