In which of the following work is not done-
A. A wind mill raising the water from well
B. A donkey put a weight on his back
C. Suman is swimming in a pool
D. A engine is pulling a train
Answer: Option B
A. A wind mill raising the water from well
B. A donkey put a weight on his back
C. Suman is swimming in a pool
D. A engine is pulling a train
Answer: Option B
Which of the following can do more work?
A. A raised hammer
B. A bullet fired by the gun
C. A moving stone
D. A rotating wheel
A. Energy released by a moving object
B. Energy emitted during mechanical work
C. The sum of the kinetic energy and potential energy of an object
D. Equal to the rate of work done
A. Chemical energy
B. Potential energy
C. Kinetic energy
D. Heat energy
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