Question

A 150 cm pendulum swings through an arc which measured 100pi cm. In exact radians, through what angle does it swing?

Answer 1

Pendulum will swing by an angle 0.666π

Explanation:

We have given arc =
`100\pi cm`

And length of the pendulum l = 150 cm

Length of the pendulum will be equal to radius of the pendulum so r = 150 cm

Arc is given by
`arc=radius* angle`

So
`100\pi =150**  \Theta`

`\Theta =0.666\pi`

So pendulum will swing by an angle 0.666π