Question

A simple pendulum is oscillating .when the bob is at its highest point the string suddenly breaks the bob will
a- keep on moving in circualar path
b- move horizontally
c- move in a projectile motion
d- move in vertically downward​

Answer 1

Explanation:

Balancing the forces in Horizontal and vertical direction:

Tsinθ= mω

2

l×sinθorT=mω

2

l

Tcosθ=mgormω

2

l cosθ=mgorω

2

=

lcosθ

g

t=

ω

2π

=2π

g

lcosθ

T=m[

t

2

4π

2

]l

solution