## What determines the period of a pendulum quizlet?

What determines the period of a pendulum? The length of the pendlum and the acceleration of gravity. The time it takes for a wave to complete one cycle. A long pendulum has a longer period than a shorter pendulum.

## Where is the most kinetic energy on a pendulum?

An active pendulum has the most kinetic energy at the lowest point of its swing when the weight is moving fastest. An ideal pendulum system always contains a stable amount of mechanical energy, that is, the total of kinetic plus potential energy.

## What is the period of a pendulum that takes one second?

A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 0.5 Hz.

## What is the back and forth motion of a pendulum called?

The direction can be described by stating an angle between the line from origin to object and a reference direction, such as “east.” Oscillate. For the pendulum, the bob moves back and forth. This back and forth motion is called “oscillation.” Its position is said to oscillate back and forth.

## What forces act on a pendulum?

There are two dominant forces acting upon a pendulum bob at all times during the course of its motion. There is the force of gravity that acts downward upon the bob. It results from the Earth’s mass attracting the mass of the bob. And there is a tension force acting upward and towards the pivot point of the pendulum.

## What cause a pendulum to come to a stop?

A pendulum stops oscillating because it loses energy when it is converted into heat. Even without air friction, the friction which exists with the point around which the pendulum rotates causes the system to lose kinetic energy and eventually stop.

## What effect does inertia have on a pendulum?

A pendulum consists of a fixed point, string or wire, and a bob or weight. What effect does inertia have on a pendulum? It keeps the pendulum moving once it is in motion.

## What keeps a Foucault pendulum moving?

To keep the Foucault Pendulum going, one must replace the energy lost with each swing. This can be done by giving the pendulum a little “kick” with each swing. To do this, two iron collars are attached to the cable near the top.

## What does Foucault pendulum prove?

Foucault’s pendulum is an easy experiment demonstrating the Earth’s rotation. At any other point on Earth, however, the point at which the pendulum is attached cannot be considered a “fixed point,” because that point also moves as the Earth rotates. The plane in which the pendulum swings is similarly in motion.

## Why do pendulums change direction?

It’s the Earth which is rotating underneath the pendulum, which makes it appear that the pendulum is in fact changing direction. At the North Pole, the pendulum would appear to rotate through a whole 360 degrees once a day, because the Earth rotates all the way round underneath it.

## Would a pendulum work in space?

No, it wouldn’t swing back and forth. Since there is no gravity in orbit, there is no force that pulls the pendulum down and make it swing back and forth. If you pushed a pendulum in orbit, the bob of the pendulum would keep going in full circles until they stop due to friction.

## How long does it take for Earth to make a complete rotation?

23 hours, 56 minutes and 4.0916 seconds

## Which is the best evidence for the Earth’s rotation?

Which observation provides the best evidence that Earth rotates? The direction of swing of a freely swinging pendulum changes during the day.

## What are the 2 pieces of evidence that the Earth rotates?

describe two pieces of evidence for earths rotation. one piece of evidence of the earth’s rotation is the coriolis effect and the second piece of evidence is that if earth did not rotate wind would blow along straight paths from areas of high pressure to areas of low presser.

## What is the evidence of Earth’s rotation?

The most direct evidence of daily rotation is via a Foucault pendulum, which swings in the same plane as the Earth rotates beneath it. At either pole, the swinging plane mirrors the Earth’s 24 hour period. Some rotation is observed at all other locations on the Earth’s surface as well, except for the equator.

## Would gravity change if the earth stopped spinning?

The Earth is currently rotating on its axis, completing one turn approximately every 24 hours. This rotational velocity causes the Earth to bulge out around its equator, turning our planet into an oblate spheroid (a flattened ball). Without this spin, gravity would be able to pull the Earth into a nice perfect sphere.