NEET Physics Work Done by Forces MCQ Question
Which of the following combinations correctly describe the work done by a force on a body?
Work done by a man lifting a bucket is positive; work done by gravity in the same case is negative.
Work done by friction on a body sliding down an incline is positive; work done by an applied force is also positive.
Work done by air resistance on a pendulum is positive; work done by gravity when lifting is negative.
Work done by a man lifting a bucket is negative; work done by gravity in this case is positive.
Correct Answer
Detailed Explanation
In the case of lifting a bucket, the work done by the man is positive as it is in the direction of the force applied, while the work done by gravity is negative as it opposes the direction of the applied force.
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