A child does 500 J of work while pulling a box from the ground up to...
A child does 500 J of work while pulling a box from the ground up to his tree house at a steady rate of 2 m/s2 with a light rope. The tree house is 4 m above the ground. What is the mass of the box?
Homework Answers
Solution)
We know, work done=mgh
Where, work done, W=500 J
Acceleratio, a=2m/s^2
Height, h=4 m
So,
500 J=m*2*4
Mass, m=500/8= 62.5 kg
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