\[
C=100 \%
\]
(1) $\frac{\text { (2) }}{\operatorname{Im} A}$
5. Billy wants to lift a $640 \mathrm{~kg}$ grand piano onto the balcony of a restaurant for a gig. He rigs up a pulley system which has an actual mechanical advantage of 6 . If the balcony is $8 \mathrm{~m}$ above the ground, how far will Billy need to pull (Input distance) in order to lift the piano to the balcony?

Answer

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Answer

Calculate the Input Distance: $Input Distance = \frac{8}{6} = \boxed{1.33}$ meters (approximately)

Steps

Step 1 ：Rearrange the formula to find the Input Distance: $Input Distance = \frac{Output Distance}{AMA}$

Step 2 ：Calculate the Input Distance: $Input Distance = \frac{8}{6} = \boxed{1.33}$ meters (approximately)