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PostPosted: Sun Mar 22, 2009 10:07 pm
by forecox
I had a few doubts in physics, if anyone could solve them i d be grateful!

1. The moment of inertia of a uniform semicircular wire of mass m and radius r, about an axis passing through its centre of mass and perpendicular to its plane is?

2.A pipe 30cm long is open at both ends. Which harmonic mode of the paper is resonantly excited by a 1.1 khz source?

3. A vibrating tuning fork is moving slowly and uniformly in a horizontal circular path of radius 8m. The shortest distance of an observer in same plane from the tuning fork is 9m. The distance between the tuning fork and oberver at the instant when apparent frequency becomes maximum is?