A worker must push the cart filled with goods from the ground level up to the lo

Question

A worker must push the cart
filled with goods from the ground level up to
the loading dock by using either the longer
Ramp A or the shorter Ramp B. The cart moves
on wheels so frictional effects are negligible.

1. On which ramp would the worker have to exert the greatest force to keep the cart moving up the ramp with a constant speed?
a. Ramp A b. Ramp B c. neither ramp
d. more information is needed to answer this question

2. Using which ramp would the worker need to do more work (i.e. transfer more energy) to move the cart to the top?
a. Ramp A b. Ramp B c. neither ramp
d. more information is needed to answer this question

Explanation / Answer

1: ramp : B

2: ramp : B

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