First slide

Circular motion in horizontal plane

Question

In a conical pendulum, the bob is rotated with different angular velocities and tension in the string is calculated for different values of $ω$ . Which of them is correct graph between T & $ω$ .

Moderate

A
B
C
D

Solution

T sin θ = m ω²r
Now r = l sin θ when l = length of the string = constant
.: T sin θ = m ω²(l sin θ)
⇒ T = m l ω²
.: T α ω²

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