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A 1520-N crate is to be held in place on a ramp that rises at 30.0° above the horizontal (see Fig. CH 5-6.15). 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 µk = 0.450 and µs = 0.650. The pulley has no appreciable mass or friction. What is the maximum weight w needed to hold this crate stationary on the ramp?

solution= 1380N

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# Find the maximum weight

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