Question

A lady pulls a bucket filled with water having mass 10 kg, from on 8m deep well in 20 s. Calculate work done and power. (g = 10 m/s⁻²)

Answer 1

Answer:

work done = 0.8 J and power= 0.04

Explanation:

first of all find the force using thw formula

f= mg

and then find the workdone by

W= f ×d where ,d= 8m

to find the power use

P =W÷t

... u will find the answer

Answer 2

Explanation:

g=0.010,m=10,h=8,t=20

W=mgh

W=10×0.010×8

W=0.8Joule

P=Work done/Time taken

P=0.8/20

P=0.04Watt