A force 250N is required to lift a 1200N weight through a pulley system in order to lift the weight through 1m. The rope has to be pulled through 5. Find the efficiency of the system.

Explanation

To find the efficiency of the pulley system, we can follow these steps:

### Step 1: Identify the Output Work
The output work (W_out) is the work done in lifting the weight. It can be calculated using the formula:

\[ W_{\text{out}} = \text{Weight} \times \text{Distance lifted} \]
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