6. Intro to Forces (Dynamics)
Equilibrium in 2D
8:37 minutes
Problem 12.76a
Textbook Question
Textbook QuestionA home mechanic wants to raise the 310-kg engine out of a car. The plan is to stretch a rope vertically from the engine to a branch of a tree 6.0 m above, and back to the bumper (Fig. 12–96). When the mechanic climbs up a stepladder and pulls horizontally on the rope at its midpoint, the engine rises out of the car.
(a) How much force must the mechanic exert to hold the engine 0.50 m above its normal position?
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