View attachment ball up ramp.bmp(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

1.A 75kg ball is dragged along a 12m ramp in order to get from the ground to the top of the ramp, which is 2m above ground. Determine the minimum applied force required if the frictional force acting on the ball (due to the ramp) is 75N.

m=75kg

d=12m

h=2m

2. Relevant equations

W=Fapp(d)

W=mgh

3. The attempt at a solution

*assuming no friction*:

W=mgh

w=75*9.8*2

W=1470 J (no friction)

.......this is where i'm lost, i assume that the mass of the ball, and the fact that there is 75N have some correlation within the problem, but i think i've hit a rut. any ideas? (see attachment for diagram) any help is appreciated

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# Homework Help: Ball up a ramp-Forces!

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