Figure 4 shows a hack- saw blade clamped horizontally on a bench and the free end is made to vibrate about the rest position.

The movement 0->a->0->b->0->a->0->b,
takes 0.7 seconds. Determine the frequency of the vibration of the blade

Answer:

one cycle =a to a=4 spaces and each space =#0.7/7=0.1#

thus; periodic time

T=0.1x4=0.4 seconds

f=#1/T=1/0.4=2.5Hz#

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Figure 4 shows a hack- saw blade clamped horizontally on a bench and the free end is made to vibrate about the rest position.

The movement 0->a->0->b->0->a->0->b,
takes 0.7 seconds. Determine the frequency of the vibration of the blade