Pendulum experiment

How many swings are represented in the picture if the bob moves from 1 - 2- 3?

• one

• two

• half

• a quarter

How can you find the period of pendulum?

• Period = Total time / number of swin

• Period = number of swing / Total time

• Period = Total time x number of swing

Unit of period is ...

• s

• m

• cm

• no unit

A pendulum needs 40 s to do 20 swings. What is its period?

• 2 s

• 8 s

• 1 s

If the mass of a simple pendulum is doubled, its period will: 

• halve 
• remain unchanged

• decrease by a factor of sqrt(2)
• double 

The period of a pendulum may be decreased by

• Increasing the mass of the bob
• moving the equilibrium point
• decreasing the mass of the bob
• shortening the length of pendulum

Pendulums of various lengths were tested. They count how many swings made in 15 sec. What is the independent variable?

• The Weight of the Pendulum

• The Length of the Pedulum

• The Number of Swings

Which of these does not affect the period of a pendulum?

• length

• gravity

• mass