Dynamics Of Circular Motion
Question 1: What is the Example of Circular Motion?
Answer:
Examples of Circular motion which are encountered in our daily life are:
- Artificial Satellite revolving around the Earth.
- Motion of blades of the Windmill.
- Motion of the wheel of a Car.
Question 2: What type of motion is called circular motion?
Answer:
Circular Motion is defined as the motion of the object along the circumference of a circle i.e. the object is moving in such a way that it is always at a fixed distance from the centre of the circle.
Question 3: What are the types of circular motion?
Answer:
The two basic types of circular motion are,
- Uniform Circular Motion
- Non-Uniform Circular Motion
Question 4: What is a centripetal force?
Answer:
The force which helps an object to move on a curved path without changing its speed is called centripetal force. Some of the examples where we see centripetal acceleration are,
- When a stone is rotated by a string the force generated on the string results in centripetal acceleration.
- Gravitational force caused by the earth’s rotation around the Sun results in a centripetal force, etc.
Question 5: What is the value of instantaneous acceleration in a uniform circular motion?
Answer:
Instantaneous acceleration in a uniform circular motion is calculated as,
a = v2/R
where
v is the velocity of the object and
R is the radius of the circular path.Direction of instantaneous acceleration is perpendicular to velocity and is directed inwards along the radius.
Dynamics of Circular Motion
Circular motion is a motion in which an object moves around a fixed point in a circular motion. It can be both uniform and non-uniform. If there is no tangential component of acceleration then it is a uniform circular motion, and if the tangential component of acceleration is present, then it is a non-uniform circular motion.
There are lots of examples around us in our daily lives where bodies perform circular motions every day. From the hands of the clock to a car turning on a banked road. All these are examples of circular motion. This motion can be classified into two categories – uniform circular motion and non-uniform circular motion. It is essential to know the dynamics and the equation of the body performing the circular motion. These dynamics allow us to analyze these motions and calculate the statistics related to the behaviour of the body in such motion.
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