If the frequency of the motion of a simple harmonic oscillator is doubled, by what factor does the maximum speed of the oscillator change?
A) 2

B) 4

C) It does not change.

D) 1/2

E) 1/4

Explanation:

As the frequency of oscillation of any oscillator is doubled

The velocity of sound  v = νλ

here ν is the frequency and λ is the wavelength

Now if ν becomes double , the wavelength λ becomes one half . The velocity of sound remains the same in the same medium .

Thus option ( c ) is correct

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle