Question

Why is it easier to push a heavy bag up a ramp than carrying it up in the staircase?
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Answer 1

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The ramp allows you to lift the wagon using a smaller force exerted over a longer distance. Regardless of how you lift the wagon you have to do work on it, to raise its altitude from this to this.

Answer 2

Answer:

The answer to that question is that the ramp allows you to lift the wagon using a smaller force exerted over a longer distance. Regardless of how you lift the wagon you have to do work on it, to raise its altitude from this to this.

Hope it helps