You and two friends apply a force of 425 N to pusha piano up a 2.0 m long ramp.
a. Work How much work in joules has been done when youreach the top of the ramp?
b. Power If you make it to the top in 5.0 s,what is your power output in watts?
c. Mechanical Advantage If lifting the piano straight up would require 1700 N of force, what is the mechanical advantage of the ramp?