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FAQs on DC Pandey Solutions (JEE Main): Circular Motion - DC Pandey Solutions for JEE Physics

1. What is circular motion in physics?
Ans. Circular motion in physics refers to the movement of an object along a circular path. In this type of motion, the object continuously changes its direction while maintaining a constant speed. The object experiences centripetal acceleration towards the center of the circle, which is responsible for keeping the object in circular motion.
2. How is circular motion different from linear motion?
Ans. Circular motion and linear motion differ in terms of the path followed by the object. In linear motion, the object moves along a straight line, while in circular motion, the object moves along a circular path. Additionally, in circular motion, the object experiences centripetal acceleration towards the center of the circle, whereas in linear motion, there is no change in direction.
3. What is the centripetal force in circular motion?
Ans. The centripetal force is the force that acts towards the center of the circle and keeps an object in circular motion. It is responsible for continuously changing the direction of the object without changing its speed. The centripetal force can be provided by various factors, such as tension in a string, gravitational force, or friction.
4. How is centripetal force related to circular motion?
Ans. Centripetal force is directly related to circular motion as it is the force that allows an object to move along a circular path. According to Newton's second law of motion, the centripetal force is equal to the product of mass and centripetal acceleration. It can be calculated using the formula Fc = (mv^2)/r, where Fc is the centripetal force, m is the mass of the object, v is its velocity, and r is the radius of the circular path.
5. What are some real-life examples of circular motion?
Ans. There are several real-life examples of circular motion. Some common examples include the motion of a car taking a turn on a curved road, the motion of a satellite around the Earth, the spinning of a merry-go-round, and the motion of a cyclist on a curved track. In each of these examples, an object moves along a circular path, experiencing centripetal force and acceleration.
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