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CBSE Class 11-science Answered

QUESTION IS ATTACHED
 
Asked by mahesh_udr2000 | 30 Aug, 2017, 03:07: PM
answered-by-expert Expert Answer

Question: 

A body of mass m kg is lifted by a man to a height of one metre in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done by them are in the ratio  

Solution:

The correct option is (B) 1:1 

This is because the work done does not change with respect to time.

Answered by Abhijeet Mishra | 06 Sep, 2017, 04:00: PM

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