Physics, asked by Abhishek777, 1 year ago

Work and energy class 9 physics ( 15 points)

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Answered by blackmagic

w = mgh

m = 55kg. h= .2m x 28= 5.6m g=9.8

w= 55 x 5.6 x 9.8

w= 3018.4

power = work/ time

power = 3018.4 / 5.4 seconds

p= 558.96 watts

hope this ans helps you :)

plzz mark this ans as the brainliest

Abhishek777: but unit watt hoga??

Abhishek777: brother in place of w it should be p(e)

blackmagic: power is always measured in watts or (j/s)

Abhishek777: i said because mgh is the formula of potential energy

blackmagic: yes, because work has been done from a certain height, so we use this formula

Abhishek777: hmm

blackmagic: hope you understood :)

Abhishek777: yup i dif

Abhishek777: *dif

Abhishek777: *did

Answered by ekanshdubey08

we know that

W= mgh

Given

Mass= 55kg, Height = .2m×28=5.6m and g=9.8m/s^2

Putting the values we get

55×5.6×9.8=3018.4

work done is 3018.4

Now energy/power= Total Work Done/Total Time Taken

=> 3018.4/5.4= 558.96

Energy = 558.96 Watt.

I hope this will help you.

please mark this answer as brainliest answer.

have a good day

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