A mover's dolly is used to transport a refrigerator up a ramp into a house. The refrigerator has a mass of 115 kg. The ramp is $2.10 \mathrm{m}$ long and rises $0.850 \mathrm{m} .$ The mover pulls the dolly with a force of $496 \mathrm{N}$ up the ramp. The dolly and ramp constitute a machine. a. What work does the mover do? b. What is the work done on the refrigerator by the machine? c. What is the efficiency of the machine?
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Step 1
Given: Force applied by the mover, $F = 496 \, \text{N}$ Distance moved, $d = 2.10 \, \text{m}$ The work done by the mover is given by the formula: $W = F \times d$ ** Show more…
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