# Circular Motion - Pendulum swinging

1. Aug 6, 2008

### bahrmd

1. The problem statement, all variables and given/known data
A pendulum swinging in a circular arc under the influence of gravity has both centripetal and tangential components of acceleration. (a) If the pendulum bob has a speed of 2.7m/s when the cord makes an angle of $$\Theta$$ =15 deg with the vertical, what are the magnitudes of the components at this time? (b) where is the centripetal acceleration a maximum? What is the value of the tangential acceleration at that location?

Length of the pendulum equals 0.75m

2. Relevant equations
ac=v^2/r

at=r$$\alpha$$

3. The attempt at a solution

So I need to find the magnitude of ac, a, and at.

I have a Length, an angle, speed and gravity.

ac=2.7m/s^2/0.75
at=0.75(?)
a=?
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Apr 28, 2011

### kingkong69

Hi man you still need the help?

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