- #1
thephysicslife
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Homework Statement
40 kg crate is pushed at a constant velocity along an incline with a vertical height of 4 m and inclined distance of 7 m. How much work was done on the crate in moving it to the top of the ramp?
For the incline, think of a right angle triangle with the 7 m being the hypotenuse.
Homework Equations
W=m|g|h
W=|fa||d|
W=m*a*d
W=1/2mv2
Any dynamic equations ( I don't think they are necessary for this question though)
The Attempt at a Solution
W=Ep
=m*|g|*H
=40kg*9.81m/s2*4m
=1.3x102 J
The thing I am unsure about is if the velocity is constant, does that mean the formula would be W=1/2mv2 and the answer would be 0 Joules because the velocity is constant? Would be find the angle of the incline using sine?