Problem a worker is walking on a concrete ramp the static, Ask an Expert

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Problem: A worker is walking on a concrete ramp. The static friction coefficient between his soles and the ramp is 0.91, whereas the kinetic friction coefficient is 0.70.

Part A: What is the largest ramp angle for which we could walk up at constant speed without slipping?

Please show steps to find the largest ramp angle for which we could walk up at constant speed without slipping.

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