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CBSE Class 9 Answered

Calculate the increase in potential energy as a block of 2kg is lifted up through 2m.
Asked by rajneesh kumar | 05 Dec, 2013, 08:40: PM
answered-by-expert Expert Answer
Given that, 
 
M = 2 kg
height h = 2 m
 
When the block is at ground, its initial potential energy is zero.
 
When the block is lifted upto 2 m height potential energy increases.
 
Increase in P.E = mgh
 
      = 2 x 2 x 9.8
 
      = 39.2 J
Answered by Komal Parmar | 06 Dec, 2013, 12:10: AM

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