Asked by jake
a 50 kg crate is lifted to a height of 10 meters.
a. how much potential energy does the crate have after being lifted?
b. if it took 5 seconds to lift the crate, using a machine what was the power rating of the machine?
a. how much potential energy does the crate have after being lifted?
b. if it took 5 seconds to lift the crate, using a machine what was the power rating of the machine?
Answers
Answered by
drwls
a) Work = Force x Distance
The Force in this case is Mass*(acceleration of gravity), so
Work = 50 kg*9.8 m/s^2*10 m = __ Newtons
b) Power = Work/Time
The Force in this case is Mass*(acceleration of gravity), so
Work = 50 kg*9.8 m/s^2*10 m = __ Newtons
b) Power = Work/Time
Answered by
Anonymous
one half second after starting from rest, a free falling oblect will have a speed of about what?
Answered by
tyler
homogeneous mixture
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