Question Detail

PHY 101 Circular Motion Objective Question

Question

From the equations of a conical pendulum, T sin θ = mv²/r and T cos θ = mg, what is the resulting expression for tan θ?
Options
A tan θ = gr / v²
B tan θ = v² / (gr)
Correct Answer
C tan θ = mv² / (mgr)
D tan θ = v²r / g
Correct Answer

Option B is the correct answer.

Detailed Explanation

Dividing the first equation by the second: (T sin θ)/(T cos θ) = (mv²/r) / (mg). This simplifies to tan θ = v²/(gr).

Hint

Divide the equation for the horizontal forces by the equation for the vertical forces. The mass and tension cancel out.

Question Info