Question

22. How much will be the energy if a body of 50 kg weight is lifted to a height of 10 m.

(a) 4800 joule (b) 4900 joule (c) 4880 joule (d) 490 joule
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Answer 1

Explanation:

Energy=mgh

=50*9.8*10

=4900J

Answer 2

Answer:

b) 4900J

Explanation:

total energy= mgh

m= 50 kg

g= 9.8 (On the basis of the options given 9.8 suits best)

h= 10m

mgh= 50× 9.8× 10 = 4900 J