You and two friends apply a force of 425 N to pusha piano up a 2.0 m long ramp.
ID: 680553 • Letter: Y
Question
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 pianostraight up would require 1700 N of force, what is the mechanicaladvantage of the ramp? 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 pianostraight up would require 1700 N of force, what is the mechanicaladvantage of the ramp?
Explanation / Answer
work is force times distance = 425*2=850Nm=850J power is work per time= 850/5 =170J/s=170W mechanical advantage: it could be that the ramps does some of the lifting work for theperson, it takes less force to push up a box rather than liftingit
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