Question

13. A circular disc of mass 300 gm and radius 20 cm
can rotate freely about a vertical axis passing
through its centre of 0. A small insect of mass
100 gm is initially at a point A on the disc (which
is initially stationary) the insect starts walking from
rest along the rim of the disc with such a time
varying relative velocity that the disc rotates in
the opposite direction with a constant angular
acceleration = 21 rad/s. After some time T. the
insect is back at the point A. By what angle has
the disc rotated till now: as seen by a stationary
carth observer ? Also find the time T.​

Answer 1

Answer:

hope it helps you

Explanation:

0 cm

can rotate freely about a vertical axis passing

through its centre of 0. A small insect of mass

100 gm is initially at a point A on the disc (which

is initially stationary) the insect starts walking from

rest along the rim of the disc with such a time

varying relative velocity that the disc rotates in

the opposite direction with a constant angular

acceleration = 21 rad/s. After some time T. the

insect is back at the point A. By what angle has

the disc rotated till now: as seen by a stationary

carth observer ? Also find the time T.