Asked by Steve

How much work is needed to push a 142- kg packing crate a distance of 2.45 m up an inclined plane that makes an angle of 20 o with the horizontal, when
inclined plane is frictionless?
Answered by drwls
Work = M*g*H , where H is the vertical rise. M = 142 kg and g = 9.8 m/s^2.

Trigonometry tells you that
H = 2.45 sin20 meters

Now do the calculation.
Answered by Steve
Thank You!!!!
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