A thin circular metal disc of radius 500.0 mm is set rotating about a central axis normal to its plane. Upon raising its temperature gradually, the radius increases to 507.5 mm. The percentage change in the rotational kinetic energy will be
Rushil , 6 Years ago
Grade 12
1 Answers
Arun
Last Activity: 6 Years ago
Dear Student
Rotational K.E. = L^2 / 2I
where L is angular momentu and I is momeny of inertia.
delta K /K = – delta I/ I = – 0.03
hence percentage increase = 3%
Provide a better Answer & Earn Cool Goodies
Enter text here...
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Ask a Doubt
Get your questions answered by the expert for free