Problem 6-53 parts (a), (b), and (c) Centripetal force - Part 3 - A

A conical pendulum consists of a mass (the bob) on the end of a string. As the bob travels in a horizontal circle at constant speed, the string traces out a cone. For the pendulum shown, mass \(m = 1.95\; kg\), length \(l = 1.03\; m\), and angle \(\theta = 36.9^\circ\).

(a) Draw a free body diagram for the bob at the instant shown.
(b) What force constitutes the centripetal force?
(c) Determine the speed of the bob.

Accumulated Solution

Correct!

\(T \cos \theta = mg\)

The acceleration in the horizontal direction is:

(A)  \(g\)

(B)  \(-g\)

(C)  \(0\)

(D)  \(mv^2/r\)