The crate is drawn across the floor by a winch that retracts the cable at a constant rate...

The crate is drawn across the floor by a winch that retracts the cable at a constant rate of 0.2 m/s. The crate’s mass is 120 kg, and the coefficient of kinetic friction between the crate and the floor is μk = 0.24.

(a) At the instant shown, what is the tension in the cable?

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(b) Obtain a “quasi-static” solution for the tension in the cable by ignoring the crate’s acceleration. Compare this solution with your result in part (a).