The angular velocity of flywheel changes from `240` rpm to `120` rpm in `6` seconds. Calculate the no of revolutions it will make before coming to rest.

Explanation

To solve the problem, we need to calculate the number of revolutions made by the flywheel before it comes to rest. We will follow these steps:

### Step 1: Convert Angular Velocities from RPM to RPS
The initial angular velocity (ω₁) is given as 240 revolutions per minute (rpm) and the final angular velocity (ω₂) is 120 rpm. We need to convert these values to revolutions per second (rps).

\[ \omega_1 = 240 \, \text{rpm} = \frac{240}{60} \, \text{rps} = 4 \, \text{rps} \]
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