The mass of the part of the string below A in figure is m. Find the tension of the string at the lower end and at A.

Explanation

To solve the problem of finding the tension in the string at the lower end and at point A, we will follow these steps:

### Step 1: Analyze the forces acting on the mass M
1. **Identify the forces**: The mass M has two forces acting on it:
- The weight acting downwards, which is \( W = Mg \) (where \( g \) is the acceleration due to gravity).
- The tension \( T \) in the string acting upwards.

2. **Set up the equation**: Since the mass is in equilibrium (not accelerating), the tension must balance the weight:
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