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How much work needs to be done on a piano to move it into the bed of a truck?

  • #1

Homework Statement


Movers must push a piano onto a truck, the bed of which is a height 1.35 m above the ground. To do this they will use a frictionless ramp. If the piano has a mass of 1806.0 kg and the movers push it up the slope at a constant velocity, how much work do they need to do on it to move it into the bed? Please provide your answer in kilo-Joules (kJ), as the amount of work should be quite large

Homework Equations


I know it involves kinetic and potential energy
K = (1/2)mv2
U = mgh



The Attempt at a Solution


I'm not sure how to calculate the velocity
 
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Answers and Replies

  • #2
haruspex
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I'm not sure how to calculate the velocity
You do not need to worry about the velocity. The question is a little misleading: they mean how much more energy is needed assuming it starts up the ramp already at that velocity.
 

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