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July 24, 2014

Homework Help: PHYSICS PLEASE HELP BILLY!!! there are about thr

Posted by billy on Monday, October 13, 2008 at 7:29pm.

A 10.2 kg crate is pulled up a rough incline
with an initial speed of 1.5 m/s. The pulling
force is 123.0 N parallel to the incline, which
makes an angle of 14.6◦ with the horizontal.
The coecient of kinetic friction is 0.39 and
the crate is pulled a distance of 8.1 m.
The acceleration of gravity is 9.81 m/s2 .


a) Find the work done by Earth’s gravity
on the crate. Answer in units of J.

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