# Physics

Dr. Miller pulled a wooden crate at a constant accelerationof 1.23 meters per second per second with a forceof 752 newtons at an angle of 22 degrees above the horizontal. The coefficient of kinetic friction between the crate and the floor was 0.347. Find the mass of the crate.

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1. Use the equation Fnet,x = M*a, to solve for M.

Fnet,x is the net force on the crate in the +x direction. That is equal to 752 cos22 - Ff

The friction force Ff is
Ff = (M*g-752sin22)*(0.347)

Put it all together and turn the algebra crank to get M.

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