NEET UG » NEET UG Study Material » Physics » Dynamics of Uniform Circular Motion

Dynamics of Uniform Circular Motion

The motion of an object along a circular path around a fixed object or axis is called a uniform circular motion.

Introduction to Uniform Circular Motion

A uniform circular motion is defined as a body travelling in a circular direction at a constant speed. 

When an object moves in a circle, it is constantly changing its course. The item is always moving in a tangent to the circle. Since the rate vector’s path is identical to that of the item’s movement, the rate vector is also tangent to the circle. 

An accelerating item is one that moves in a circle. Accelerating items are those that can convert their velocity: either the speed (i.e., the rate vector’s importance) or the path. 

The uniform circular motion of an item in the present shifts at a regular speed. Nonetheless, due to its change in course, it rapidly accelerates. The acceleration is inwards. 

The net force is the final motion characteristic for an item undergoing uniform circular motion. The net force acting on such an item is aimed in the direction of the circle’s centre. The net force is described as inward or centripetal force. Without this inward force, the item might stay in a straight line, never deviating from its intended route. However, because the inward net force is oriented perpendicular to the rate vector, the item continuously changes its direction and goes through an inward acceleration.

An item’s motion is said to be circular if it moves in such a way that its distance from the middle factor remains constant. It’s generally referred to as a circular motion when an object is more or less transferring on a circular route. 

A synthetic satellite TV for pc orbiting the globe at a regular height, a stone attached to a rope and swung in circles and a vehicle bursting over a curve on a race track are all Uniform Circular Motion Examples.

Types of uniform circular motion:

  1. Uniform circular motion
  2. Non-uniform circular motion

Uniform Circular Motion: 

It’s sometimes referred to as uniform circular motion when an item moves in a circle at a regular speed. The course of an item that moves in a circle is always changing. This way, an item that is making a circle on a route along with that exact item will complete repeating strips across the route at the same length each time. The object, for example, is transferring in a tangent to the circle.

Here are a few circular motion examples that are uniform:

  • The ceiling fan’s blades spin back and forth.
  • At the racetrack, a racing car is bursting through a curve.
  • A ball rolling at a constant speed on the circular.
  • A stone that is swung in circles by a rope.
  • A computer-generated satellite that orbits the earth at a constant altitude.
  • Planets spin at varying speeds across the solar system or circular other planets.
  • The clock’s hour hand.
  • A pendulum with equal amplitudes on all sides.
  • A stitching machine’s vibrating spring.
  • Raindrops fall at a consistent rate.
  • A train running at a steady pace beside the rails.
  • A stream of content delivered promptly and at a consistent rate.
  • Coulombic force causes electrons to revolve over the nucleus of an atom.

Non-Uniform Circular Motion

Non-uniform circular motion occurs when an item’s motion indicates changes in the particle’s speed as it moves along a circular path.

The changes that occur within the path are accounted for by radial acceleration, which is given by the given equation.

Radial acceleration is affected by changes that occur within the velocity. 

 

Non-uniform circular motion is demonstrated in the following examples:

  • A bouncing ball, for example.
  • During a race, a horse takes a walk.
  • A bus passing through the market.
  • Moving a container in a specific direction.
  • The motion of an asteroid.
  • A plane flying through the clouds before landing.
  • A train approaching the end of its journey.
  • A vehicle that has come to a complete stop.
  • When one car collides with another.
  • In a 50m race, a man goes for walks.

 

Dynamics of uniform circular motion

 

The centripetal force is the pseudo-force that acts alongside the radius and is directed closer to the centre of the circle. A frame can’t extrude its route of movement, because according to Newton’s first law of motion, an outside force is required to keep it circular. However, this frame’s line of motion within itself is continually changing, and there is a change in the speed as well, which is why it accelerates, known as radial centripetal acceleration.

The frame has a regular inclination to revert to its previous straight course while changing alongside the circle. Centrifugal force is given upward thrust by the tendency.

In this manner, the centrifugal force remains constant and opposes the centripetal pressure.

Centrifugal force = mv2/r and it acts along the radius, no matter how far out from the circle’s centre.

The centripetal and centrifugal forces, respectively, are motion and response forces.

Assume a stone is tethered to at least one end of the rope, with the alternate end looped in a circle.

When the stone is subjected to centripetal pressure F1 with the aid of the hand. It is pushed outward by centrifugal force, with F2 acting on it since it has a tendency to revert to its natural linear motion.

Conclusion

Uniform circular motion is a crucial concept with several applications in life. The purpose of this investigation is to determine the effect of actual media. The media was utilised to visualise the consistent circular motion concept.

When an item is present in a process that requires regular circular movement, the object’s velocity and the pressure required to maintain the motion have specific relationships. The centripetal pressure is directly proportional to the rectangle of the item’s velocity.

We can also conclude that there should be an online pressure appearing on it based on Newton’s second law. Circular motion is a rare instance of an object accelerating in a circular pattern. The line linking the pointers of the faster speed vector to the end of the slower speed vector keeps moving closer to the centre.

faq

Frequently asked questions

Get answers to the most common queries related to the NEET UG Examination Preparation.

When a particle travels at a constant angular velocity, what property is maintained?

 Ans. The particle’s energy is preserved when travelling at a constant angular velocity. A particle’s m...Read full

What is the uniform circular motion formula?

Ans:  ...Read full

Is a uniform motion circular?

Ans: A uniform circular motion is defined as a body travelling in a circula...Read full

Is there a dynamic equilibrium for uniform circular movement?

Ans: A frame’s velocity isn’t constant when it’s moving with the non-uniform acceleration. As a re...Read full