Question

In a conical pendulum, a string of length
120 cm is fixed at rigid support and carries a
mass of 150 g at its free end. If the mass is
revolved in a horizontal circle of radius 0.2 m
around a vertical axis, calculate tension in the
string. (g = 9.8 m/s2)
[Oct 13]​

Answer 1

Answer:

R.E.F image

In vertical direction,

Tsinθ=mg(i)

In horizontal plane,

Tcosθ=

R

mv

2

[centripetal for

From (i), T=

sinθ

mg

=

l

2

−R

2

mgl

T=(

1000

150

)

(120)

2

−(20)

2

(10)×120

=1.52N