Respuesta :
In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves circular motion of its parts. The equations of motion describe the movement of the center of mass of a body.
Examples of circular motion include: an artificial satellite orbiting the Earth at a constant height, a ceiling fan's blades rotating around a hub, a stone which is tied to a rope and is being swung in circles, a car turning through a curve in a race track, an electron moving perpendicular to a uniform magnetic field, and a gear turning inside a mechanism.
Since the object's velocity vector is constantly changing direction, the moving object is undergoing acceleration by a centripetal force in the direction of the center of rotation. Without this acceleration, the object would move in a straight line, according to Newton's laws of motion.
Answer:
Acceleration in uniform circular motion is always towards the center of the circle.
Explanation:
When object revolves in the circle then during the uniform circular motion the speed of the object in circular path must remains constant. So the acceleration in the tangential direction must be zero.
Now we also know that the direction of velocity is continuously changing with time so here the acceleration must be there which will help to change the direction of velocity.
So here the acceleration is always perpendicular to the velocity which is towards the center of the circle which help to change the direction of velocity always and since there is no tangential acceleration so here speed of the particle will remain constant.
