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Work, Power And Energy
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05/11/2021 10:11 am
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Give one example each in which a force does
(a) positive work
(b) negative work
(c) zero work
1 Answer
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05/11/2021 10:12 am
(a) Positive work: When a ball is thrown upwards, work done by the force is positive work.
(b) Negative work: Work done by the gravitational force of the earth on the ball thrown which is thrown upwards.
(c) Zero work: Sliding of the box on the ground is an example of zero work as the gravitational force acting on the box.