Key in the oscillation numbers

Exercise and reference answers

Questions

1. Unit

   Hz

   Answer

   1.25

   Question

   A heart beats 75 times in a minute. Its frequency in hertz?

2. Unit

   s

   Answer

   0.8

   Question

   The same heart. The period of one beat, in seconds?

3. Unit

   rad/s

   Answer

   7.07

   Question

   A 1 kg block on a spring of 50 N per metre. Angular frequency in rad per second, to two decimals?

4. Unit

   m

   Answer

   1

   Question

   A simple pendulum ticks seconds, so its period is 2 s. Its length in metres, with g = 9.8?

Instructions

Work each one out, then key the number in on the pad.

Explanation