Is it possible that some force is acting on a body but still the work done is zero?

Academic Physics NCERT Class 9

When the force is exerted on the object at the right angle with the direction of displacement of the object, then displacement is zero and the work done is zero.

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Updated on: 10-Oct-2022

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Is it possible that a force is acting on a body but still the work done is zero? Explain giving one example.
Is it possible that an object is in the state of accelerated motion due to external force acting on it, but no work is being done by the force. Explain it with an example.
When is the work done by a force on a body: (a) positive, (b) negative, and (c) zero?
A body is at rest even though 2N force is acting on it. Explain the reason.
What is the work done when the force acting on the body and the displacement produced in the body are at right angles to each other?
If the body is found to be accelerated, is the force acting on it balanced or unbalanced?
What should be the angle between the direction of force and the direction of motion of a body so that the work done is zero?
(a) What happens to the work done when the displacement of a body is at right angles to the direction of force acting on it? Explain your answer.(b) A force of $50\ N$ acts on a body and moves it a distance of $4\ m$ on a horizontal surface. Calculate the work done if the direction of force is at an angle of $60^{o}$ to the horizontal surface.
Write an expression for the work done when a force is acting on an object in the direction of its displacement.
What is the work done on a body moving in a circular path ?
Work done by the centripetal force is:(a) zero(b) infinity(c) more than zero(d) none of these
Is it true that displacement of a body can be positive or zero, but never negative?
What is the condition for a force to do work on a body?
The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.
(a) When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it. (b) How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?

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