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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 ┬Ák between the box and
the floor is 0.2.
The acceleration of gravity is 9.81 m/s
Find the acceleration of the box.
Answer in units of m/s

  • Physics -

    remember that fricion is dependent on Normal force. But the vertical component of pulling is upward, so it lessens weight.

    Net force=mass*a
    solve for a.

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