Question

In an electric shaver, the blade moves back and forth over a distance of 2.0 mm. The motion is simple harmonic, with frequency 118 Hz.
(a) Find the amplitude.
mm

(b) Find the maximum blade speed.
m/s

(c) Find the magnitude of the maximum blade acceleration.
m/s2

Answer 1

I will gladly check your answers after you have domn some thinking about the proplem. They practically tell you what the amplitude is.

Maximum speeds in simple harmonic motion are w*Amplitude, and Maximum acclerations are w^2*Amplitude.

w is the angular frequency in radians per second. You must compute that from the frequency in Hz. You should know how to do that.

Answer 2

0.5