Answer:
a) 0.01s
b) 100Hz
Explanation:
Period is defined as the time taken by a wave to complete 1 oscillation.
Since the object completes 2500 cycles in 25secs, we can write
2500cycles = 25secs
1 cycle = x
Cross multiply
2500x = 25
x = 25/2500
x = 0.01secs
Hence the period of its rotation is 0.01secs
b) is the reciprocal of the period
Frequency = 1/Period
Frequency = 1/0.01
Frequency = 100Hertz
Hence the frequency of rotation is 100Hz
