Question

A pendulum of 14 cm long oscillates through an angle of 12⁰,
then the
angle of the path described by its
extrimities is ----
A) 13 pi/14​

Answer 1

Step-by-step explanation:

Here, pendulum performs circular arc motion

Also, radius =14cm

Angle (θ)=18

∘

=(

180

π

×18)

c

∴θ=

10

π

c

∴ length of path =rθ

∴ length of path =14×

10

π

cm

∴ length of path =

10

14π

cm=4.396cm

∴ length of path travelled is 4.396cm