A ball weighing 0.3 kg is whirling in a vertical circle of radius 1.5 m . The number of revolutions made by the ball per second is 5 . Calculate the tension in the string at the topmost point and at the lowerment point .

Explanation

To solve the problem of calculating the tension in the string at the topmost and bottommost points of the vertical circular motion of a ball, we will follow these steps:

### Given Data:
- Mass of the ball (m) = 0.3 kg
- Radius of the circle (r) = 1.5 m
- Number of revolutions per second (n) = 5

### Step 1: Calculate the Angular Velocity (ω)
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