A refrigerator weighing 1500 N is to be lifted onto a truck bed that is 1.0 m above the ground. When pushed up a slanting ramp 2.0 m in length a force of only 750 N is required to move it at constant velocity. Neglecting friction and comparing the work involved in lifting the refrigerator straight up to the work in pushing it along the ramp, there is
A. an equal amount of work is required in each case.
B. less work required when the ramp is employed.
C. more work required when the ramp is employed.
Answer: A
Physics & Space Science
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