A metal bob of mass 0.6 kg is attached to the end of a string of length 1 m and the bob is whirled in a horizontal circle with a uniform speed of 12 m/s. What is the centripetal force acting on the bob ? If the speed of the bob is 5 m/s calculate the tension in the string.

Explanation

To solve the problem step by step, we will first calculate the centripetal force acting on the bob when it is whirled at a speed of 12 m/s, and then we will calculate the tension in the string when the speed is reduced to 5 m/s.

### Step 1: Calculate the Centripetal Force

The formula for centripetal force (F_c) is given by:

\[
F_c = \frac{mv^2}{r}
...