Asked by Hanna
A physics student uses a ramp to slide a 350 kg piano onto the back of a pickup truck. The box on the back of the truck is 81 cm above the ground and the planks are 3 m long. An average force of 1500 N is required to slide the piano up the planks.
a) Determine the work done in loading the piano.
b) Calculate the work done by friction.
a) Determine the work done in loading the piano.
b) Calculate the work done by friction.
Answers
Answered by
R_scott
a) f * d = 1500 N * 3 m = 4500 J
b) 4500 J - m g h = 4500 J - (350 kg * 9.8 m/s^2 * .81 m)
b) 4500 J - m g h = 4500 J - (350 kg * 9.8 m/s^2 * .81 m)
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