question_answer

A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.                                      

Answer:

Frequency = 40 times Time = 4 seconds Frequency in one second \[=\frac{40}{4}=10\]time Time \[=\frac{1}{Frequency}\] \[=\frac{1}{10}=0.1\] Seconds   \[=\,\frac{1}{Time\,Period\,}=\frac{1}{0.1}=10\,\]