Answer to Question #150612 in Physics for olawumi abdulrahmon

Question #150612

A body of mass 7.5kg is to be pulled up along a place which is included at 30° to the horizontal. If the efficiency of the place is 75%,what is the minimum force required to pull the body up the plane?

Expert's answer

"\\eta F=mg \\sin{30}\\\\(0.75) F=(7.5)(9.8) \\sin{30}\\\\F=49\\ N"

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