A 1520-N Crate Is to Be Held in Place on a Ramp

question 69

Short Answer

A 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal (see figure).The massless rope attached to the crate makes a 22.0° angle above the surface of the ramp.The coefficients of friction between the crate and the surface of the ramp are and .The pulley has no appreciable mass or friction.What is the MAXIMUM weight w that can be used to hold this crate stationary on the ramp?

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