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43.

In a simple harmonic motion, the position of equilibrium is always                        
A. stable B. unstable
C. neutral D. none of the above



44.

If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is                        
A. proportional to A B. proportional to A2
C. proportional to 1/A2 D. independent of A



45.

A particle of mass 2 kg executes simple harmonic motion of frequency 6/71 Hz and amplitude 0.25 m. Its maximum kinetic energy is                        
A. 4.5 J B. 9.0 J
C. 12.0 J D. 18.0 J




46.

The maximum displacement of a particle executing S.H.M. corresponds to                        
A. zero potential energy and maximum kinetic energy B. zero kinetic energy and maximum potential energy
C. maximum kinetic energy and maxi-mum potential energy D. minimum kinetic energy and minimum potential energy



47.

It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to                        
A. f B. 1/f
C. 1/f2 D. f2



48.

A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2 A, the energy becomes                        
A. E B. E/2
C. 2E D. 4E



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