Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Please,please help me One coolie takes 1 minute to raise a suitcase through a height of 2 m but the second coolie takes 30 s to raise the same suitcase to the same height. The powers of two coolies are in the ratio of

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

  • Option 1)

    1:2

  • Option 2)

    1:3

  • Option 3)

    2:1

  • Option 4)

    3:1

 

Answers (1)

best_answer

As discussed in

Power -

Rate of doing work

-

 

 P = \frac{N}{t}

Work done = mgh in both case

\frac{P_{1}}{P_{2}}=\frac{P_{2}}{P_{1}}=\frac{30 sec}{1 min} = \frac{30s}{60s} = \frac{1}{2} = 1:2


Option 1)

1:2

This solution is correct

Option 2)

1:3

This solution is incorrect

Option 3)

2:1

This solution is incorrect

Option 4)

3:1

This solution is incorrect

Posted by

prateek

View full answer

Similar Questions

Latest Question