A gramophone disc rotates at 60 rpm . A coin of mass 18 g is placed at a distance of 8 cm from the centre . Calculate centrifugal force on the coin . Take `pi^(2) = 9. 87` .

Explanation

To solve the problem of calculating the centrifugal force on a coin placed on a gramophone disc, we can follow these steps:

### Step-by-Step Solution:

1. **Convert the given mass to kilograms**:
The mass of the coin is given as 18 grams. To convert this to kilograms:
\[
m = \frac{18 \text{ g}}{1000} = 0.018 \text{ kg}
...