Question

a body of mass 100 kg is lifted up to 10m find amount of K Eif it is dropped from 10m and find KE just before it reaches the ground. ​

Answer 1

Answer:

Given,

Mass m = 100 kg

Height h = 10 m

g = 10 m/s²

1) Work done = mgh

= 100 * 10 * 10

= 10000 J Ans.

2) Potential energy = Work done

= 10000 J Ans.

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THIS IS SECOND EXAMPLE

Given,

Mass of the object= 100 kg

Height at which object is lifted = 10m

Work done = m x g x ,m

= 10,000 Joules

Potential energy = work done = m x g x h

Therefore potential energy =10,000 Joules.

hope it helps u....