my physics ques witch is brtty confusing is help plz
askrew jack has a squaree screw thread of 3.5 mm pitch single start it must raise a load of 350 kg by turning a thread with a handle 40 cm long the effort applied is 58 N wich must over comes the load blus the frictional resistance of 16.5 N
calculate
1- mechanical adventage 2-velocity ratio 3mechanical effeciency
askrew jack has a squaree screw thread of 3.5 mm pitch single start it must raise a load of 350 kg by turning a thread with a handle 40 cm long the effort applied is 58 N wich must over comes the load blus the frictional resistance of 16.5 N
calculate
1- mechanical adventage 2-velocity ratio 3mechanical effeciency
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1) IMA = (40/0.35) = 114.286.
2) Velocity ratio = (80 x pi)/0.35 = 718.2:1.
3) Of 58N. applied, 16.5N. is lost to friction. Net force doing work = 41.5N.
(41.5/58) x 100 = 71.55% efficiency.
2) Velocity ratio = (80 x pi)/0.35 = 718.2:1.
3) Of 58N. applied, 16.5N. is lost to friction. Net force doing work = 41.5N.
(41.5/58) x 100 = 71.55% efficiency.