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When you view the pendulum's swing, it shows that at
the very top of the swing KE = 0. What does that tell you
about the pendulum's motion at that point?
1) Intro

Answer :

Answer:

The velocity of the bob is zero

Explanation:

A simple pendulum is a device that has a string with bob attached to one end and fixed to a pivot at the other end.

It swings to and fro about the pivot point.

There are two forces acting on the bob

The downward gravitational force

The force of the tension on the string

Both forces are conservative and don't do any work.

When a small amount of force is applied to the bob. It swings to and fro from the equilibrium position.

The kinetic energy is maximum at a point where the bob is at a minimum height from the ground.

                                   KE = max

The kinetic energy is minimum at a point where the bob is at a maximum height from the ground.

                                   KE = 0 = min

The expression for KE is given by

                                  KE = 1/2 mv²    Joule

Since kinetic energy is only present in a body that is in motion.

So, KE = 0,  v = 0, the body is temporarily at a stationary point.

cbloom11

Answer:

Sample Response: If KE = 0, the pendulum is not moving. At the top of the swing, the pendulum must stop for a brief moment.

Explanation:

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