The type of force that keeps an object such as the Earth moving in a circle is a combination of gravity and centrifugal force. Gravity wants to pull the object inward, but centrifugal force wants to push the object outward. This combination keeps objects going in a circular path. You could also say that, for objects such as a rock attached to a rope that is swung in circles, the forces are the tension of the rope opposing centrifugal force. This is essentially the same thing, except with different forces at work.
centrifugal force, not to be confused with centripetal force
The force that keeps objects moving in a circle is known as the centripetal force, which acts towards the center. The velocity of the object moving in a circle will be tangential to the circle.
The Centripetal force keeps a object moving in a circle and its force and acceleration are directed toward the center of the circle
The force that keeps an object moving in a circle or an arc is called a centripetal force. Gravity is an example of centripetal force that keeps a satellite in a circular orbit around a planet. Another example is when you ride on a merry-go-round - the rotating play structure imparts a centripetal force upon you, forcing you to also travel in a circle.
gravity keeps us in a circle
It's not that there is some force keeping the planets from falling into the sun; the sun's gravity prevents the planets from travelling in a straight line out of the solar system. If you throw a ball in a straight line then it keeps going, but if you throw a ball on a rope tied to a pole then the rope pulls the ball toward the pole and keeps the ball moving in a circle.
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centripetal or centrifugal force...... most likely the first
centripetal or centrifugal force...... most likely the first
The force that keeps objects moving in a circle is known as the centripetal force, which acts towards the center. The velocity of the object moving in a circle will be tangential to the circle.
The Centripetal force keeps a object moving in a circle and its force and acceleration are directed toward the center of the circle
The Centripetal force
No. The force keeping a ball on a string moving in a circle is centripetal force, i.e. force pulling the ball to the center of the circle.
friction
The centripetal force which always acts perpendicular to the motion of the object