Question

A strobe based tachometer is shining at a disk rotating at 2400 rpm. The disk has one circumferential mark for speed measurements.

– a. How many marks will you see if the strobe flashing rate is 1200 per minute? PLEASE SHOW WORK, ANSWER BELOW IS MULTIPLE CHOICE....

1 - Stationary

2 - Stationary

1 - Moving

2 - Moving

– b. Repeat part (a) for flashing rates of 800, 2400, 4800, and 7200 flashes/min.

Answer 1