Question
In raising a $6000-\mathrm{N}$ piano with a pulley system, the movers note that for every $2 \mathrm{~m}$ of rope pulled down, the piano rises $0.2 \mathrm{~m}$. Show that, ideally, the force required to lift the piano is $600 \mathrm{~N}$.
Step 1
The mechanical advantage (MA) of a pulley system is the ratio of the distance the effort force moves to the distance the load moves. In this case, the effort force moves 2 meters for every 0.2 meters the piano moves. So, the mechanical advantage is: MA = Show more…
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In raising a 5000-N piano with a pulley system, the workers note that for every 2 m of rope pulled downward, the piano rises 0.2 m. Ideally, show that 500 N is required to lift the piano.
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