Advertisements
Advertisements
Question
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)
Advertisements
Solution
Mass of water, m = 50 kg
Gravitational force F = mg = (50 × 10) N
Height, h = 15 m
Gravitational potential energy = mgh
= 50 × 10 × 15
= 7500 J
APPEARS IN
RELATED QUESTIONS
Work is said to be done by a forte only when ................
A body, when acted upon by a force of 10 kgf, moves to a distance 0.5 m in the direction of force. Find the work done by the force. Take 1 kgf = 10 N.
1 J = ______ calorie.
What are the units of (a) work, and (b) energy?
A uniform circular motion is an accelerated motion. Justify it.
Calculate the amount of work done by a child carrying a bag of 20 kg when he moves a distance of 40 m in
(a) Vertical direction, and
(b) Horizontal direction
Fill in the boxe to show the corresponding energy transformation.
If a ball is dropped on the sloping roof of a house, it acquires ______ and falls on the ground. That is the transformation of ______ energy into ______ energy takes place.
(kinetic, potential, motion)
A man squatting on the ground gets straight up and stand. The force of reaction of ground on the man during the process is ______.
