Give a simple relation to calculate mechanical advantage of a block and tackle system.

Explanation

To calculate the mechanical advantage (MA) of a block and tackle system, follow these steps:

### Step-by-Step Solution:

1. **Understand the System**: A block and tackle system consists of multiple pulleys and ropes. The mechanical advantage is determined by how many strands of rope are supporting the load.

2. **Count the Strands**: Identify the number of rope strands that are directly supporting the load. Each strand contributes to the mechanical advantage.

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