A simple pendulum of length 1.87 m has a mass of 120 g attached.It is drawn back 38.0° and then released.What is the maximum speed of the mass?
A)1.44 m/s
B)3.93 m/s
C)2.74 m/s
D)2.79 m/s
E)0.249 m/s

Question

Quizplus · Accepted Answer

The maximum speed of a simple pendulum is given by:v = sqrt(2*g*L*(1-cos(theta)))where:g is the acceleration due to gravity (9.8 m/s^2)L is the length of the pendulum (1.87 m)theta is the angle of displacement (38.0°)Plugging in the values, we get:v = sqrt(2*9.8 m/s^2*1.87 m*(1-cos(38.0°)))v = 2.79 m/s

A Simple Pendulum of Length 1