How is it possible for an object moving in a circular motion with a constant speed to still be accelerating?

The velocity vector is constant in magnitude but changing in direction. For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating. It is accelerating because the direction of the velocity vector is changing.

Does an object moving in a circle have a constant speed?

An object moving in a circular path with constant speed does not have a constant velocity because the direction of the velocity is constantly changing. In the case of an object moving in a circular path the acceleration is directed toward the center of the circle.

Is it possible to spin a ball on a string in a perfectly horizontal circle?

You certainly couldn’t spin an object in a perfect horizontal string, because in such a string the tension would only pull the object horizontally and the unbalanced gravitational force would cause downward motion.

Is speed constant in vertical circular motion?

The Expression for Velocity of Body Moving in a Vertical Circle: Hence the speed of the body changes continuously. It is maximum at the bottommost position and minimum at the uppermost position of the vertical circle. Hence the motion of the body is not uniform circular motion.

Which force is responsible for keeping a ball on a string moving in a circular path?

centripetal force
A centripetal force is a net force that acts on an object to keep it moving along a circular path.

What is constant in circular motion?

Since the body describes circular motion, its distance from the axis of rotation remains constant at all times. Though the body’s speed is constant, its velocity is not constant: velocity, a vector quantity, depends on both the body’s speed and its direction of travel.

Can a string be perfectly horizontal?

Is the string perfectly horizontal? Yes, the string is perfectly horizontal. If it were not so, the vertical component of the tension would support the weight and the horizontal component provide the necessary centripetal force. However, when the string is horizontal there is no vertical component of the tension.

Why can a ball on a string never be horizontal?

There is the tension in the string which has radial and vertical components, and gravity, which is only vertical. The vertical component of the tension has to be equal to gravity. The horizontal component has to be the centripetal force.

When a body moves with a constant speed along a circle?

Hint: When a body moves with constant speed in a circular path, the motion of body is said to be uniform circular motion.

What is the direction of velocity on a tennis ball?

The direction of the velocity is tangent to the circular path and at a right angle to the acceleration vector. Assuming no wind resistance, the only forces accelerating the ball are the radial acceleration from the string and gravity from earth. Once the string is cut, the only force acting on the ball is gravity.

What keeps the ball from moving in a straight line?

Because of its inertia, the tendency of the ball is to move in a straight line; how- ever, the string prevents motion along a straight line by exerting on the ball a force that makes it follow the circular path. This force is directed along the string toward the center of the circle, as shown in Figure 6.1.

What is the tension in the string at the speed of ball?

The Tension in the string at the horizontal point where the speed of the ball is v(2) T= m(v(2))^2/r as the mg force is perpendicular to the string and not contributing to the tension.

What happens to the ball when the string is cut?

The ball will move outward in a straight line. This idea has been around for quite some time. The ball will fly away tangentially across from the point where it is in its circular motion when the string is cut. Kaiser T, MD. When a ball attached to a string is undergoing uniform circular motion horizontally, is the tension on the string zero?