wiz-icon
MyQuestionIcon
MyQuestionIcon
6
You visited us 6 times! Enjoying our articles? Unlock Full Access!
Question

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


A

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B


The moment of inertia of the circular disc about its diameter is

I = 14Mr2 = 14(0.200 kg)(0.04m)2

= 8.0 × 105 kgm2

The angular momentum about the axis of rotation is

L = Iω = (8.0 × 105kgm2)(10rad/s)

= 8.0 × 104 kgm2/s = 8.0 × 104Js


flag
Suggest Corrections
thumbs-up
16
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Intuition of Angular Momentum
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon