Question

Help meh in this question​

Answer 1

• Radius=r=R_o/2
• angular velocity=w=v_o
• mass=m

We know

`\boxed{\sf K.E=(1)/(2)mv^2}`

For Rotational motion

`\boxed{\sf v=r\omega}`.

Putting value

`\\ \qquad\quad\sf{:}\dashrightarrow K.E=(1)/(2)m(r\omega)^2`

`\\ \qquad\quad\sf{:}\dashrightarrow K.E=(1)/(2)mr^2\omega^2`

`\\ \qquad\quad\sf{:}\dashrightarrow K.E=(1)/(2)m\left((R_o)/(2)\right)^2v_o^2`

`\\ \qquad\quad\sf{:}\dashrightarrow K.E=(1)/(4)mv_o^2`