Solve a problem relating to IMA HELP!

[nicoled]

solve a problem relating to IMA!! HELP!

a dolly with cans has a combined mass of 72kg (x 9.8 = Fr) and is pushed up a hill.
the hill has an angle of inclination of 12.5 degrees and the cans are pushed a distance of 15m (De) in a time of 8.21 seconds. a constant force of 356.2 N (Fe) is necessary to push the loaded dolly up the hill at a constant velocity. calculate the following:

ideal mechanical advantage of the inclined plane (hill):


IMA = De / Dr

IMA = 15m / Dr

How do I find distance resistance???

 

[ideasrule]

That's the distance that the cart travels vertically (against gravity), since without the dolly, you'd have to lift the cans upwards.