Answer to Question #193119 in Physics for sfd

Question

A car weighing 1.57 x 104 N is brought to the hydraulic platform of a service shop; the diameter of the elevator piston measures 0.25 m. The weight of the entire elevator is 7.85 x 103 N. (a) Calculate the pressure that the hydraulic fluid must exert on the elevator piston to lift the car at a constant speed. (b) Calculate the pressure needed to give the car an upward acceleration of 0.72 m / s2.

Answer 1

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