3. A hydraulic press has a 30mm ratio input piston and 75mm radio output piston. What input force is needed to provide an output force that is able to lift a truck 1300kg?
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Expert's answer
2018-09-06T16:53:08-0400
P_1=P_2 F_1/A_1 =F_2/A_2 F_2=F_1 (A_2/A_1 )=F_1 (r_2/r_1 )^2 We have F_1=mg. Thus, F_2=mg(r_2/r_1 )^2=(1300)(9.8) (30/75)^2=2040 N.
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