Question

m
3
2
3. 500 litre of water is raised from the first floor of
a house at height 4 m to its third floor at height
12 m. State whether the potential energy of water
will decrease or increase.
Find the decrease/increase in potential energy of
water. Take : g = 10 N kg ! density of water
= 1 kg litre!​

Answer 1

Answer:

INCREASE

INCREASE = MGH = 500 × 10 × 8

40000N

Answer 2

Answer:

Increase

increase in potential = mg(h2-h1)

= 500×10×(12-4)

= 4×10 raise to the power 4