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1.) A student moves a box of books down the hall by pulling on a rope attached to a box up a ramp. The student pulls with a force of 185N at an angle of 25° above the horizontal. The box has a mass of 35kg, and the coefficient of kinetic friction between the box and the floor is 0.27. Find the acceleration of the box. 2.) The student in item 1 above moves the box up a ramp inclined at 12° with the horizontal. If the box starts from rest at the bottom of the ramp and is pulled at an angle of 25° with respect to the incline and with the same 185N force, what is the acceleration up the ramp?

Verified Answer :

For the
problems presented, the answer would be the following:

1. Givens
are:

Θ – 25 degrees

µ = 0.27 

g = acceleration due to
gravity = 9.8 m/sec^2

Answer
would be a = 2.14 m/sec^2.

2. Givens are:

N = 257.32 newtons 

f = 0.27(257.32) 

f = 69.48
N 

Answer would be a = 2.80 m/sec^2 

I am hoping that these answers have satisfied your queries
about these specific questions.

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