# When a stone is tied to a string whirled in a circle?

Last Update: April 20, 2022

This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!

**Asked by: Mrs. Thelma Wunsch Jr.**

Score: 4.8/5 (41 votes)

The correct answer is **the stone flies off tangentially**. A stone tied to a string is whirled in a circle. As it was revolving, the rope suddenly snaps. Then the stone flies off tangentially.

## When a stone tied to a string is whirled in a circle what will be the work done on it by the string?

The string and tangent of the circle will be perpendicular. Hence, work done **is zero**.

## When a stone tied to the end of a string whirled in a circular path the centripetal force is provided by the?

The object is said to undergo uniform circular motion. When a stone is tied at the end of a string and whirled its velocity continuously changes direction but its speed remains a constant. The change in velocity is affected by the centripetal force provided by the tension in the string which is **mv2r m v 2 r .**

## What happens to a stone tied to the end of a string and whirled?

A stone tied to a string is **whirled in a circle**. As it is revolving, the string suddenly breaks.

## When a stone is rotated in a circle by a string?

So when an object performs circular motion then along the radial direction there will be **centripetal force acting**. Centripetal force acts towards the center, whereas tension is a pulling force and it also will act towards the center from the stone. Hence centripetal force will provide the tension in string.

## A stone tied to the end of a string 80 cm long is whirled in a horizontal circle with a constant

**16 related questions found**

### What keeps the stone in a circular motion?

Any object moving in a circle (or along a circular path) experiences a **centripetal force**. That is, there is some physical force pushing or pulling the object towards the center of the circle. This is the centripetal force requirement.

### What happens to a stone tied to the end of a string and whirled in a circle if the string suddenly breaks explain why?

What happens to a stone tied to the end of string and whirled in a circle if the string suddenly breaks? If the string suddenly breaks, **the stone will fly off tangentially along the straight line due to inertia of direction**. This is because, the velocity at any point is directed along the tangential at that point.

### Why is it easier to revolve a stone tied to a smaller string than tied to a larger string?

**Torque = Force * Perpendicular Distance**

As torque is directly proportional to the perpendicular distance, it becomes evident that longer the string, more torque is required to rotate it. Hence we can conclude that it is easier to revolve a stone by attaching it to a shorter string.

### Why the stone moves away when the string is broken during rotation?

Answer: When the string breaks the stone no longer rotates around its center of rotation, but won't suddenly move directly away from it, and will instead **continue to follow its path of inertia**. That is, it will continue to move in the direction in which it was moving at the moment the string broke.

### Why does a revolving stone tied in a string flies away when the string breaks?

It is due to **the inertia of direction**. When the string breaks, the force acting on the stone ceases. In the absence of force, the stone flies away in the direction of instantaneous velocity which is along the tangent to the circular path.

### What is the major force acting on the stone during rotation?

When the stone moves on the vertical circular path, the necessary **centripetal force** is provided by the tension in the string.

### Why stone flies away tangentially?

If the string break , the stone flies away tangentially . Why ? **The velocity of the stone at any instant is along the tangent to the circle at that instant When the string breaks centripetal force whirling the stone vanishes** Therefore on account of inertia the stone flies off tangentially .

### Is centrifugal force?

Centrifugal force is **the apparent outward force on a mass when it is rotated**. Think of a ball on the end of a string that is being twirled around, or the outward motion you feel when turning a curve in a car. In an inertial frame, there is no outward acceleration since the system is not rotating.

### What is the work done by a string?

Work done by string - definition

In case of a moving pulley, it **pulls double the length of string from either side** whereas in case of a fixed pulley change in length in string on one side is compensated by change in length of string on the other side.

### When a stone whirled around a horizontal circle it show that work is done?

When a stone tied to one end of a string is whirled horizontally, there is an inward force exerted by the string on the stone called **tension**. This force provides necessary centripetal force for circular motion.

### Is the speed of the stone uniform?

2) Although the **stone is rotating with uniform speed**, its direction keeps on changing. Hence, the stone is said to be moving with uniform acceleration. The direction of acceleration is towards the center of the circle. ... Its direction is opposite to the centripetal force, i.e. away from the center.

### What force is applied through the string?

**The tension force** is the force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends. The tension force is directed along the length of the wire and pulls equally on the objects on the opposite ends of the wire.

### When a body is moving along a circular path then it has?

A particle rotating in a circular path may have constant speed but **velocity changes continuously**.

### When a ball is whirled in a circle and the string supporting the ball is released the ball flies off tangentially This is due to 1 the action of centrifugal force 3 centripetal force 2 inertia for linear motion 4 some unknown cause?

Until the stone is tied to a string, due to tension in string, it have centripetal force and centrifugal force along in radial direction of motion so when **the rope breaks**, it doesn't have force in radial direction so due to inertia the stones flies off tangentially.

### What will be the direction of motion of the stone with respect to the circular path if the string breaks suddenly?

If the string suddenly breaks, the centripetal force will be zero only tangential force will be present, then the stone **travels in tangential direction**.

### How centripetal acceleration is derived?

Consider a body of mass m moving along the circumference of a circle. the radius of a circle r with velocity v,as shown in the figure. Then if a small force F is applied on the body, then we know that the force is given as F=ma. ... Thus, the acceleration due to centripetal force is given by,**a=v2r**.

### What causes the pail to move in circular motion?

As a bucket of water is tied to a string and spun in a circle, **the tension force acting upon the bucket** provides the centripetal force required for circular motion. As the moon orbits the Earth, the force of gravity acting upon the moon provides the centripetal force required for circular motion.

### What can you say about moving in circular motion?

Uniform circular motion can be described as the motion of an **object in a circle at a constant speed**. As an object moves in a circle, it is constantly changing its direction. ... An object undergoing uniform circular motion is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction.

### Is acceleration constant in uniform circular motion?

Acceleration is a change in velocity, either in its magnitude—i.e., speed—or in its direction, or both. In uniform circular motion, the direction of the velocity changes constantly, so **there is always an associated acceleration**, even though the speed might be constant.

### Why is centrifugal force fake?

Centrifugal force is an outward force **apparent** in a rotating reference frame. It does not exist when a system is described relative to an inertial frame of reference. ... When this choice is made, fictitious forces, including the centrifugal force, arise.