# You asked: When air resistance is ignored does a pendulum clock run faster or slower at higher altitude?

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At higher altitude gravity becomes weaker so pendulum cannot be restored quickly (gravity acts as a restoring force). Therefore, the pendulum clock will run slower at higher altitude.

## How does air resistance affect a pendulum?

When the pendulum oscillates it carries the air along with it. The air resistance reduces the acceleration and increases the time period of oscillation. The air resistance reduces the velocity of the pendulum and the pendulum gradually comes to rest.

## How does altitude affect a pendulum?

While changing the altitude of the pendulum will change the period, it will do it only slightly unless you take it miles above the earth’s crust. Furthermore, decreasing the altitude of the pendulum will increase the force due to gravity, which will resulut in a decreased period.

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## What is the effect on time period of a simple pendulum with altitude?

Because the strength of Earth’s gravitational field is not uniform everywhere, a given pendulum swings faster, and thus has a shorter period, at low altitudes and at Earth’s poles than it does at high altitudes and at the Equator.

## When a pendulum clock is taken to a high hill then?

When the pendulum is taken to the top of mountain, the value of ‘g’ will decrease and hence time period will increase. As the pendulum takes more time to complete one vibration, it will lose time.

## What role does air resistance have on a simple pendulum?

Mohazzabi, P. and Shankar, S. (2017) Damping of a Simple Pendulum Due to Drag on Its String. Journal of Applied Mathematics and Physics, 5, 122-130.

## Is there air resistance on a pendulum?

However, since there is air resistance around us, pendulums (swinging bobs) slow down and move closer and closer to a halt. Say we have a metal sphere of mass m and radius r as the bob, suspended at length l from a point.

## When pendulum is raised to higher altitudes its period?

At a higher altitude, the value of gravity decreases. As it is inversely proportional, the period of the pendulum will increase. So, it will gain time when taken to high altitude.

## Will a pendulum clock move faster or slower if it is taken to a mountain justify your answer?

On taking the pendulum to the top of a mountain, g will decrease, therefore, T will increase. The pendulum will take more time to complete one vibration, i.e., it will lose time.

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## When a pendulum clock that is accurate at sea level is moved high into the mountains does it move faster move slower or keep the same speed?

The period of a pendulum clock is inversely proportional to the square root of g. When taken to high altitude, the value of g will decrease (by a small amount), which means the period will increase. If the period is too long, the clock is running slow and so will LOSE time.

## How does the time period of simple pendulum vary with?

(a) The time period of oscillations is directly proportional to the square root of the length of the pendulum.

## How does the time period of simple pendulum vary with length?

The longer the length of string, the farther the pendulum falls; and therefore, the longer the period, or back and forth swing of the pendulum. The greater the amplitude, or angle, the farther the pendulum falls; and therefore, the longer the period.)

## Which of the following affect the time period of a pendulum?

The mass and angle are the only factors that affect the period of a pendulum.