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A mover's dolly is used to deliver a refriger- ator up a ramp into a house. The refrigerator has a mass of 106 kg . The ramp is 1.6 m long and rises...

A mover’s dolly is used to deliver a refriger-
ator up a ramp into a house. The refrigerator
has a mass of 106 kg . The ramp is 1.6 m long
and rises 0.192 m. The mover pulls the dolly
with constant velocity and with a steady force
of 497 N up the ramp. The dolly and ramp
constitute a machine.
The acceleration of gravity is 9.8 m/s2 .
What work does the mover do?

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