Question

A ring of mass m and radius r rotates about an
axis passing through its centre and perpendicular
to its plane with angular velocity ⍵. Its kinetic energy is
(a) 1 mr² ⍵² (b) mr⍵²
2
(c) mr²⍵² (d) 1 mr⍵²
2

Answer 1

Explanation:

4. A circular track around a sports ground h

circumference of 1080 m. Two cyclists Paurush

Shreyan start together and cycled at constant spe

of 6 m/s and 9 m/s respectively around the circ

track.After how many minutes will they meet a

at the starting point.