A metal sphere of a mass 0 2 Kg is attached to an inextensible string of length 130cm whose upper - Physics - Rotational dynamics

Question

A metal sphere of a mass 0 2 Kg is attached to an inextensible
string of length 130cm whose upper end is fixed to rigid support if
the sphere is made to describe a horizontal circle of radius 50 cm
the time for its revolution is near about

Anshu Agrawal · Accepted Answer

Dear student,
<img alt=
"A sphere of mass 200 g is attached to an inextensible string of length 130 cm whose upper end is fixed to the ceilling The sphere is made to describe a"
src=
"https://d10lpgp6xz60nq%20cloudfront%20net/physics_images/PR_XI_V01_C03_S01_190_S01%20png">
The angle is given as,  cosθ=l2-r2l  The time period of the pendulum is given as,  t=2π lcosθ ​ g t=2π ll2-r2l ​ g​   ​    t=2π (130×10-2)2−(50×10-2)2  9
8     t=2 21sec

Regards

A metal sphere of a mass 0.2 Kg is attached to an inextensible string of length 130cm whose upper end is fixed to rigid support if the sphere is made to describe a horizontal circle of radius 50 cm the time for its revolution is near about