wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The kinetic energy of a circular disc rotating with a speed of 60 r.p.m. about an axis passing through a point on its circumference and perpendicular to its plane is (mass of circular disc = 5 kg, radius of disc = 1 m) approximately:

A
170 J
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
160 J
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
150 J
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
140 J
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is D 150 J

KE=12Iω2=12×32mr24π2f2=3mr2×π2f2=3×5×1×10×1

KE=150 J


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Instantaneous Axis of Rotation
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon