Sage-Tips

What is the magnitude of velocity v of an athlete who takes T second to go once around a circular track of radius r?

If an athlete takes t seconds to go once around the circular path of radius r, the velocity v is given by a. v = 212 C.

What is the speed of a body moving in a circular path of radius r after?

the speed of a body moving in the circular path of radius r is equal to the speed that it would gain in a free fall by falling through a distance of half of the radius of the circular path.

What will be the distance covered by the body if it moves on a circular path?

Answer: distance will be zero sine body comes back to it’s original position and it’s displacement is zero….

How many times an athlete moving in a circular track changes its direction?

In order to keep himself on track, he quickly changes his speed at the corners. How many times will the athlete have to change his direction of motion, while he completes one round? It is clear that to move in a rectangular track once, he has to change his direction of motion four times.

What is the displacement per unit time called?

Velocity is the distance / displacement per unit time.

Is uniform circular motion?

Uniform circular motion can be described as the motion of an object in a circle at a constant speed. As an object moves in a circle, it is constantly changing its direction. An object undergoing uniform circular motion is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction.

What will be the distance covered by the body if it moves on a circular path of radius r and reaches its original position after one complete round?

If a body travels a distance equal to 2πr in circular path, it will reach the same position where it started. So, its displacement is zero.

What is the length of the path moved by that person?

Distance: – The distance travelled by a body is the actual length of the path covered by a moving body irrespective of the direction in which the body travels. For example- if a man walks 4 km in east and 3km in north then actual length covered by the man is 4+ 3= 7 km.

Why is the motion of an athlete moving along the circular path an accelerated motion?

When an athlete runs in a circular track his direction changes at every point. This direction change is possibly due to the force acting on him. Thus the motion of the athlete in the circular track is accelerated motion.

When an object moves along a circular path is required?

So for an object moving in a circle, there must be an inward force acting upon it in order to cause its inward acceleration. This is sometimes referred to as the centripetal force requirement.

What is meant by circular motion?

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.

What is the distance covered by the athlete in half round?

If athele moves in a circular track of radius 7 m so distance covered in half round=2πr/2=πr=22/7*7=22 m. But the athlete has covered only half. So, the distance covered by the athlete will be, But, the displacement is the shortest distance b/w the initial and the final position.

What is the magnitude of centripetal acceleration in a circular path?

For an object traveling at speed v in a circular path with radius r, the magnitude of centripetal acceleration is a c = v 2 r. Centripetal acceleration is greater at high speeds and in sharp curves (smaller radius), as you may have noticed when driving a car, because the car actually pushes you toward the center of the turn.

What is the direction of acceleration in the circular path?

The figure shows an object moving in a circular path at constant speed and the direction of the instantaneous velocity of two points along the path. Acceleration is in the direction of the change in velocity and points toward the center of rotation. This is strictly true only as Δ s Δ s tends to zero.

What type of acceleration does a body experience in uniform circular?

What type of acceleration does a body experience in the uniform circular motion? The angle between acceleration and velocity is 0°, and the body experiences linear acceleration. The angle between acceleration and velocity is 0°, and the body experiences centripetal acceleration.