Question

pls say the answer along with explnation
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Answer 1

Answer:

1) 1litre=1kg

2litre=2kg

2) potential energy due to the height of the bucket

as potential energy = mass × gravity × height.

3)total height = 15m

height from surface of water =5m

so height from well =10m.

mass=500gm=1/2kg

g=10

PE= mgh =50J

4)1 round=2litre=2kg

20 round=2×20kg = 40kg