Question

A ring moves in a horizontal circle of radius r with a velocity ω in free space the tension is

• A. 2 mrω²
• B. mrω²
• C. mrω²/2
• D. mrω²/2π

Answer 1

Answer: (D)

mrω²/2π

Answer 2

$\frac{m}{2\pi r}$ (r θ 2)ω²r = 2 T sin θ = 2 Tθ assuming θ to be small.

T = mrω²/2π.