Calculating the Velocity at the bottom of a Pendulums Trajectory.

AI Thread Summary
To calculate the velocity of a pendulum at the bottom of its trajectory, apply the principle of conservation of energy, where gravitational potential energy converts to kinetic energy. Given a mass of 2.0 kg and a height of 0.2 m, the potential energy (PE) can be calculated using the formula PE = mgh, which results in 3.92 J. At the bottom of the trajectory, this potential energy is entirely transformed into kinetic energy (KE). The kinetic energy can be expressed as KE = 0.5mv^2, allowing for the calculation of velocity. Thus, the velocity at the bottom of the pendulum's swing can be determined using these energy principles.
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Homework Statement


I am trying to calculate the velocity of the pendulum at the bottom of the trajectory.
Mass of the ball - 2.0 kg
Height - .2 m
G - 9.8 m/s^2


Homework Equations


PE = mgh
He mentioned something about the tangential force, I'm really not sure what I should be doing.

The Attempt at a Solution

 
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You should be using conservation of energy. Your gravitational potential will be entirely kinetic energy at the bottom of the trajectory.
 

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