Work Energy and Power - Result Question 36

39. One coolie takes 1 minute to raise a suitcase through a height of 2m but the second coolie takes 30s to raise the same suitcase to the same height. The powers of two coolies are in the ratio of

[NEET Kar. 2013]

(a) 1:2

(b) 1:3

(c) 2:1

(d) 3:1

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Answer:

Correct Answer: 39. (a)

Solution:

  1. (a) Power P=Wt

P1P2=t2t1=30s1 minute =30s60s=12

( t1=1 minute; t2=30 second given)



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