Posted by **Anonymous** on Monday, December 10, 2012 at 9:14pm.

A student moves a box of books down the hall

by pulling on a rope attached to the box. The

student pulls with a force of 179 N at an angle

of 29.8

◦

above the horizontal. The box has a

mass of 42.2 kg, and µk between the box and

the ﬂoor is 0.2.

The acceleration of gravity is 9.81 m/s

2

.

Find the acceleration of the box.

Answer in units of m/s

2

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