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3.
Use the following information to answer parts a and b.
A 7.5 kg crate is placed on a ramp that is at an angle of 30.0°
relative to the horizontal.
a) What is the force of friction required for the crate to remain stationary?
(2)
Physics 20: Mrs. Tyler Assignment 7
b) What is the static coefficient of friction necessary for the crate to remain
stationary?
(1)
4-

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