Peoples Physics Concepts

10.3. Pendulum http://www.ck12.org

v(t) =− 2 πf Acos( 2 πf∆t) start with the equation for velocity

vmax=− 2 πf Acos( 2 πf

1

4

T) put in the terms we know

A=−

vmax

2 πfcos( 2 πf^14 T)

solve for the amplitude

A=−

2 m/s

2 π^12 Hz∗cos( 2 π∗^12 Hz∗^14 ∗2 s)

plug in the known values

A=.63 m

Watch this Explanation

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/301

Simulation

• http://simulations.ck12.org/Oscillations/