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        A sphere of coefficient of linear expansion a, mass m and radius r is spinning about an axis through its diameter with an angular velocity w when it is heated such that is temprature increases by delta t. what is angular velocity?
2 years ago

Norman Manchu
151 Points
							With the use of conservation of angular momentum-I1w1=I2w2 where I represents moment of inertia and w represents angular velocity hence${\color{Orchid} \frac{2mr^{2}}{5}w}=\frac{2m(r(1+\alpha\Delta \Theta ) ^{2}}{5}(wfinal)=\frac{2m(r^{2}(1+2\alpha\Delta \Theta )}{5}(w')(extension)$ Equate purple equation with the last most extended form and you'll get wfinal=w|{1+2(alpha)(∆t)}

2 years ago
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### Course Features

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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions