Which of the following cases can change the effect of the force-Changing the direction of force-Changing both magnitude and direction-None of these-Changing the magnitude of force-

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Standard VI

Physics

Application of Force

Which of the ...

Question

Which of the following cases can change the effect of the force?

Changing the magnitude of force.

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Changing the direction of force.

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Changing both magnitude and direction.

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None of these.

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Solution

The correct option is C
Changing both magnitude and direction.

Let us consider an example of throwing a stone. The magnitude of the force applied in throwing the stone decides how far the stone will go, but the direction depends on the direction of force. If the magnitude or direction of the force is changed, the stone will go to the different location. Thus, changing either its magnitude or its direction can change the effect of force.

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Similar questions

Which of the following is not an effect of force ?
(a) a force can change the speed of a moving object
(b) a force can change the direction of a moving object
(c) a force can change the composition of a moving object
(d) a force can change the shape and size of an object

If the direction and magnitude of the applied forces changes, its effect also changes.

Observation 1: Try to stop a ball coming towards you,so as to save a boundary, by applying a force of some magnitude in the opposite direction of the motion of ball.

Observation 2: In this case apply the force of same magnitude but in same direction of the motion of the ball.

In observation 1 boy saves a boundary by applying a force opposite to the direction of motion but in observation 2, the change in direction of force cost the team 4 runs as the change in direction of force pushed the ball further to the boundary.

So, the change in effect of a force can be experienced by a change in it's direction as well as magnitude. The above statement is :-

Observation 1: Try to stop a ball coming towards you, so as to save a boundary, by applying a force of some magnitude in the opposite direction of the motion of the ball.

Observation 2: In this case apply the force of the same magnitude but in the same direction of the motion of the ball.

In observation 1, the boy saves a boundary by applying a force opposite to the direction of motion, but in observation 2, the change in direction of force cost the team 4 runs as the change in direction of force pushed the ball further to the boundary.

So, the change in the effect of a force can be experienced by a change in its direction as well as magnitude. The above statement is:-

Q. Which of the following statements is correct? 1) force is a relative quantity and not an absolute quantity that is its direction and magnitude can change from observer to observer. 2) force can either be relative or absolute depending on the context. 3) frictional force is a relative force that is its direction depends on the observer. 4)the magnitude and direction of force depends on the frame of reference of the observer and changes with change in frame of reference.

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