A constant torque of 20 Nm is exerted bri a pivoted wheel for 10 seconds during which" time' the angular velocity of the wheel changes from 0 to 100 rpm. When the external torque is removed'it is stopped by friction in 100 s. Find (i) the MX of the wheel and (ii) the fiictional torque ?

Explanation

To solve the problem step by step, we will follow the given information and apply the relevant physics concepts.

### Given:
- Torque (τ) = 20 Nm
- Initial angular velocity (ω₀) = 0 rpm
- Final angular velocity (ω) = 100 rpm
- Time (t₁) = 10 seconds
- Time to stop (t₂) = 100 seconds
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