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Question
There are two mutual perpendicular forces acting on an object. One force acts in the direction of motion of the object and other is perpendicular to the motion. During this interval, the kinetic energy of the body changes from 25 J to 100 J. The work done by the force acting perpendicular to the direction of the object is:
There are two mutual perpendicular forces acting on an object. One force acts in the direction of motion of the object and other is perpendicular to the motion. During this interval, the kinetic energy of the body changes from 25 J to 100 J. The work done by the force acting perpendicular to the direction of the object is:
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Solution
The correct option is B 0 J
The force acting perpendicular to the direction of motion produces no displacement and so the work done by this force is zero.
In the above question, the kinetic energy would increase only due to the force acting in the direction of motion or velocity of the object. The force acting perpendicular to the direction of motion has no contribution to the increase in kinetic energy and hence it does no work.
0 J
The force acting perpendicular to the direction of motion produces no displacement and so the work done by this force is zero.
In the above question, the kinetic energy would increase only due to the force acting in the direction of motion or velocity of the object. The force acting perpendicular to the direction of motion has no contribution to the increase in kinetic energy and hence it does no work.
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