Answer:
η = 0.882 = 88.2 %
Explanation:
The efficiency of the pulley system can be given as follows:
[tex]\eta = \frac{W_{out}}{W_{In}}\\\\[/tex]
where,
η = efficiency of pulley system = ?
W_out = Output Work = (600 N)(0.6 m) = 360 J
W_in = Input Work = (35.7 N)(11.43 m) = 408.051 J
Therefore,
[tex]\eta = \frac{360\ J}{408.051\ J}[/tex]
η = 0.882 = 88.2 %
