Solve a problem relating to IMA HELP

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To solve the problem regarding the inclined plane and the ideal mechanical advantage (IMA), the combined mass of the dolly and cans is 72 kg, requiring a force of 356.2 N to maintain constant velocity up a 12.5-degree incline. The distance pushed along the incline is 15 meters, and the challenge is to determine the distance resistance (Dr), which represents the vertical distance the cans would need to be lifted against gravity. To calculate IMA, the formula IMA = De / Dr is used, where De is the distance along the incline. The vertical distance can be found using trigonometric functions based on the angle of inclination.
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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?
 
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That's the distance that the cart travels vertically (against gravity), since without the dolly, you'd have to lift the cans upwards.
 

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