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CBSE Class 8 Answered

solve this numrical
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Asked by kuldipsinghdhillon31 | 15 Apr, 2022, 08:34: AM
answered-by-expert Expert Answer
Given that,
Time taken to lift 10 kg bag by Ram to 3rd floar, t1= 2 min
Time taken to lift 10 kg bag by Shyam to 3rd floar, t2= 3 min
Now, 
For the given case, we know that the work done to lift 10 kg bag will be same but the power for Ram and Shyam will be different.
i.e.,P subscript 1 over P subscript 2 equals fraction numerator W divided by 2 over denominator W divided by 3 end fraction
rightwards double arrow P subscript 1 equals 1.5 space cross times P subscript 2
Hence, from this we can conclude that both Ram and Shyam will do same amount of work/energy and power of Ram is greater then Shyam.
Answered by Jayesh Sah | 18 Apr, 2022, 12:06: PM
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