# Centripetal Force Experiment question

• Stardrops
In summary, during an experiment involving two masses connected by a string and one being swung in a circle while the other hangs down, it is important to consider the effect of the hand making small circles. This could potentially affect the results and change the measurement of the radius (r) used in the centripetal force formula, F=(mv^2)/r. It is also important to take note of any changes in the motion and path of the mass when the hand stops making the small circles. In the lab, r was measured at 0.20m and was kept at this distance while the mass was twirled.
Stardrops

## Homework Statement

We had an experiment where you have two masses on either side of a string and you swing one in a circle,while the other hangs vertically down(providing Fg).

"When you swing the mass in a circle, your hand most likely moved in a small circle. What effect does this have on the results?"

## Homework Equations

I'm guessing they are asking -> How will it affect Centripetal force formula F=(mv^2)/r

## The Attempt at a Solution

Not really quite sure what your hand does to it though

Stardrops said:

## Homework Statement

We had an experiment where you have two masses on either side of a string and you swing one in a circle,while the other hangs vertically down(providing Fg).

"When you swing the mass in a circle, your hand most likely moved in a small circle. What effect does this have on the results?"

## Homework Equations

I'm guessing they are asking -> How will it affect Centripetal force formula F=(mv^2)/r

## The Attempt at a Solution

Not really quite sure what your hand does to it though

How did you measure r in the lab? would it change this measurement?

You might also ask yourself what happened when you stopped making the small circles with your fingers/hand. Did you notice anything about the motion and path of the mass that was making the circular path that was different if you just let it go by itself after getting it started?

pgardn said:
How did you measure r in the lab? would it change this measurement?

The r was given .20 m and we made a mark and tried to keep the mass twirling that dist. away from the tube we were holding on to

## 1. What is centripetal force?

Centripetal force is a force that acts on an object moving in a circular path, always directed towards the center of the circle.

## 2. How do you measure centripetal force?

Centripetal force can be measured using a device called a centripetal force apparatus, which consists of a rotating arm with a weight attached to it. The force can be calculated using the formula F = mv2/r, where m is the mass of the weight, v is the velocity, and r is the radius of the circular path.

## 3. What factors affect centripetal force?

The factors that affect centripetal force include the mass of the object, the velocity of the object, and the radius of the circular path. As these factors increase, so does the centripetal force required to keep the object in its circular motion.

## 4. What is the relationship between centripetal force and centripetal acceleration?

Centripetal force and centripetal acceleration are directly proportional. This means that as the centripetal force increases, the centripetal acceleration also increases. This relationship is described by the formula F = ma, where m is the mass of the object and a is the centripetal acceleration.

## 5. What are some real-life applications of centripetal force?

Centripetal force is present in many everyday activities, such as swinging a ball on a string, driving around a curved road, or riding a roller coaster. It is also important in the functioning of machines, such as centrifuges used in laboratories and washing machines.

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