The problem supports a drawing of a w (weight) with arope attatched going straig
ID: 1734196 • Letter: T
Question
The problem supports a drawing of a w (weight) with arope attatched going straight up around one pulley and coming downto the figure of a man. The question is: For the pulleysystem shown, what is the upper limit of weight the strong man canlift? I would think that since a pulley has a mechanical advantageof 1 that the strong man would be able to lift twice as muchweight. Since the weight is given no value, a determinedamount of weight would not be possible to calculate. It couldbe twice his body weight. His body weight is not knowneither. It could be twice his strength, but since strength isa measurable quantity and no values are given I do not think thisis correct. Any expert answers ? The problem supports a drawing of a w (weight) with arope attatched going straight up around one pulley and coming downto the figure of a man. The question is: For the pulleysystem shown, what is the upper limit of weight the strong man canlift? I would think that since a pulley has a mechanical advantageof 1 that the strong man would be able to lift twice as muchweight. Since the weight is given no value, a determinedamount of weight would not be possible to calculate. It couldbe twice his body weight. His body weight is not knowneither. It could be twice his strength, but since strength isa measurable quantity and no values are given I do not think thisis correct. Any expert answers ?Explanation / Answer
The pulley has a mechanical advantage of 1. It only changes the direction of load. The load which has to be raised can be pulled down due to this change of direction. But the load W to be lifted remains the same i.e. W.
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