UP THE HILL!!
A body of mass m is hauled up a hillside by a constant force F such that F is always tangential to the surface.The other required dimensions are give in the figure. If the coefficient of friction of the surface be k, find the work done by F(in Joules) in hauling up the body to the top of the hill.
GIVEN:
m = 2 kg
H = 10m
L = 100m
k = 0.03
g = 9.8 ms^-2
The answer is 254.8.
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1 solution
Relevant wiki: Understanding the work-kinetic energy theorem
Here,,, we will be using Conservation of work .... m g H + μ m g L = W ... So W = 1 3 m g = 2 5 4 . 8 J