CBSE Class 9 Answered
1)Give five example of negative work done with explanation?
Asked by | 23 Dec, 2013, 07:05: PM
Expert Answer
(1) The work done by the frictional force, when we push the book to a distance.
(2) The work done by the gravitational force, when we are lifting a bucket of water from the well.
(3) The work done by the gravitational force, when we are climbing on a tree.
(4) The work done by the frictional force of air, when a ball is falling downwards.
(5) The work done by the buoyant force, when a coin is sinking.
(2) The work done by the gravitational force, when we are lifting a bucket of water from the well.
(3) The work done by the gravitational force, when we are climbing on a tree.
(4) The work done by the frictional force of air, when a ball is falling downwards.
(5) The work done by the buoyant force, when a coin is sinking.
In all the above cases, the force acts opposite to the direction of motion.
Answered by | 23 Dec, 2013, 10:12: PM
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