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March 1, 2015

March 1, 2015

Posted by **Anonymous** on Thursday, November 29, 2012 at 11:35pm.

a 31.7

◦

ramp by a force of 112 N that points

along the ramp.

The acceleration of gravity is 9.81 m/s

2

.

If the coeﬃcient of kinetic friction between

the box and ramp is 0.24, calculate the change

in the box’s kinetic energy.

Answer in units of J

- physics -
**Elena**, Friday, November 30, 2012 at 3:07amΔKE=ΔPE +W(fr)= m•g•s•sinα+μ•m•g•s•cosα=

=m•g•s(sinα+μ•cosα)

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