Answer:
Yes it is physics isn't it or is it something else.
Explanation:
Let me know.
decrease the height
height is directly proportional to the g.p.e
The net force on the sledge is 31.64N.
Frictional force = µkR
= 0.269 x 42.2 x 9.81 = 111.36
net force = 143N - 111.36N
= 31.64N
refer brainly.com/question/24557767
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