Question

7.
A car is moving in a circular horizontal track of radius 10 in with a constant speed of 10 m Apuso bob
suspended from the roof of the car by a string of length im. The angle made by the string with vertical is (G=-2)
​

Answer 1

Explanation:

Hence from the figure,

We know that,

Tsinθ=

r

mv

2

[centripetal] ⟶(i)

Tcosθ=mg⟶(ii) (force)

from (i) and (ii))

Tcosθ

Tsinθ

=

r

mv

2

×

mg

1

tanθ=

rg

v

2

Given that, radius =10 m

velocity =10 m/s

g=10m/s

2

tanθ=

10×10

10

2

=1⇒

θ=45

0

solution