what is the difference between rotation and circular motion?
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The main difference between these types of motion is that circular motion is a special case of rotational motion, where the distance between the body's centre of mass and the axis of rotation remains fixed. Rotational motion is based around the idea of rotation of a body about its center of mass.
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Rotation is rotating an object about a fixed point without changing its size or shape. The translation is sliding a figure in any direction without changing its size, shape or orientation.
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Circular motion is defined as the movement of an object around the circular path from a fixed distance. For example-movement of the hands of a clock. Curvilinear motion is defined as the movement of an object along a curved path. For example- a stone or ball thrown by a boy.
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Circular motion is the motion of an object which moves around a object in circular path. Rotatory motion is the rotation of an object on its own axis.
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The difference between angular velocity and tangential velocity is that “The angular displacement covered by a body in unit time is called angular velocity and tangential velocity is the velocity, which is tangent to the circular path.”
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Firstly, in horizontal circular motion, the vertical displacement of the object, relative to the ground, remains constant, while in vertical circular motion it does not. ... That means the tension force will need to be larger at the bottom than at the top to keep the total force pointing towards the center a constant.
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Linear motion involves an object moving in a straight line in one dimension, like a car driving on a perfectly straight road, while projectile motion involves two dimensions, like a cannonball firing. ... Circular motion is different from other forms of motion because the speed of the object is constant.
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2. Centripetal acceleration,which is responsible for the change in direction given by a=v^2/r. Now in UNIFORM CIRCULAR MOTION(UCM), the magnitude of velocity is constant but the direction varies, which means the angular velocity or speed is constant,hence the tangential acceleration is zero.
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Angular momentum is inertia of rotation motion. Linear momentum is inertia of translation motion. The big difference is that the type of motion which is related to each momentum is different. It is important to consider the place where the force related to rotation applies, which is appears as 'r' in the formula.
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Angular velocity is the angular displacement covered over a time interval. So if an object has angular acceleration it is either rotating faster and faster or rotating slower and slower. On the other hand, radial/centripetal acceleration is always present when an object is undergoing circular motion.
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When an object turns around an internal axis (like the Earth turns around its axis) it is called a rotation. When an object circles an external axis (like the Earth circles the sun) it is called a revolution. Let's talk about rotation and revolution. A lot of people confuse a rotation and a revolution.
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Rotation and Revolution "Rotation" refers to an object's spinning motion about its own axis. "Revolution" refers the object's orbital motion around another object. For example, Earth rotates on its own axis, producing the 24-hour day. Earth revolves about the Sun, producing the 365-day year.
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It is used when one body moves around another, while rotation is used to mean the movement around the axis. For example, the Moon revolves around the Earth and the Earth revolves around the Sun.
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Thus, while the object moves in a circle at constant speed, it undergoes constant linear acceleration to keep it moving in a circle. However, it's angular velocity is constant since it continually sweeps out a constant arc length per unit time. Constant angular velocity in a circle is known as uniform circular motion.
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Rotation of the Earth is its turning on its axis. Revolution is the movement of the Earth around the Sun.
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For objects in uniform circular motion, the net force and subsequent acceleration is directed inwards. Circular motion requires a net inward or "centripetal" force. Without a net centripetal force, an object cannot travel in circular motion.
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The answer lies in the definition of uniform circular motion, which is a circular motion with constant speed. It follows then that non-uniform circular motion denotes a change in the speed of the particle moving along the circular path.