Homework Help: PHYSICS~~~

Posted by Steve on Wednesday, March 21, 2012 at 9:12pm.

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?

PHYSICS~~~ - drwls, Wednesday, March 21, 2012 at 9:15pm
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.
PHYSICS~~~ - Steve, Wednesday, March 21, 2012 at 9:17pm
Thank You!!!!

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