4.The electric log- splitter shown below uses a hydraulic cylinder with 2.5-inchinternal diameter. While splitting a 20-inch long log, the max. hydraulic pressure reads 720 psi, and the motor draws

a current of 12 amps at 120 VAC. Knowing that the cylinder advances the splitter wedge at a rate of 3 in/s, (a) what is the max power generated by the log- splitter while splitting the log, and (b) what is the efficiency of the log splitter?