Advertisements
Advertisements
Question
Can work done be zero even if force acts on the body?
Advertisements
Solution
APPEARS IN
RELATED QUESTIONS
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The loss in potential energy of the body,
A vessel containing 50 kg of water is placed at a height 15 m above the ground. Assuming the gravitational potential energy at ground to be zero, what will be the gravitational potential energy of water in the vessel? (g = 10 m s-2)
Fill in the blank with suitable word :
Work is measured as a product of __________ and __________
What is the relationship between Nm and dyne cm?
A cricket ball is thrown up from the earth's surface. What happens to its P.E.
(a) during the motion
(b) at the highest point?
An electric motor drives a machine which lifts a mass of 4 kg through a height of 10 m in 5 s at a constant speed. Assuming g = 10 ms-2, calculate
(i) the amount of work done, (ii) the power of the machine.
Fill in the boxe to show the corresponding energy transformation.
Work done by this force at any instant is ______.
