A disc of radius $10$ cm is rotating about its axis at an angular speed of $20$ rad/s. Find the linear speed of point of the rim.

Open in App

Solution

A disc of radius $= 10 c m = 0.1 m$
Angular velocity $= 20 r a d / s$
Linear velocity on the rim $= ω r = 20 \times 0.1 = 2 m / s$ .

Suggest Corrections

Similar questions

Q. A disc of radius 10 cm is rotating about its axis at an angular speed of 20 rad/s. Find the linear speed of
(a) a point on the rim,
(b) the middle point of a radius.

A disc of radius 10 cm is rotating about its axis at an angular speed of 20 rad/s. Find the linear speed of

(a) a point on the rim,

(b) the middle point of a radius.

uniform circular disc of mass 200 g and radius 4.0 cm is rotated about one of its diameter at an angular speed of 10 rad/s. Find the angular momentum about the axis of rotation

Q. A uniform circular disc of mass 200 g and radius 4.0 cm is rotated about one of its diameter at an angular speed of 20 rad/s. Find its angular momentum about the axis of rotation.

Q. A homogeneous disc of mass 2 kg and radius 15 cm is rotating about its axis (which is fixed) with an angular velocity of 4 rad/s. The linear momentum of the disc is :

Join BYJU'S Learning Program

A disc of radius 10cm is rotating about its axis at an angular speed of 20 rad/s. Find the linear speed of point of the rim.

A disc of radius =10cm=0.1mAngular velocity =20rad/sLinear velocity on the rim =ωr=20×0.1=2m/s.

A disc of radius $10$ cm is rotating about its axis at an angular speed of $20$ rad/s. Find the linear speed of point of the rim.

A disc of radius $= 10 c m = 0.1 m$
Angular velocity $= 20 r a d / s$
Linear velocity on the rim $= ω r = 20 \times 0.1 = 2 m / s$ .