why does circular motion involve accseleration?

Question

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Answer 1

Another way to think of it is that an object in circular motion (centripetal force) is always accelerating toward the center of rotation.

For example, a car on a circular race track at a constant speed is always turning toward the center of the race track. The speedometer may not move, but if it were not for the acceleration, the car would leave the race track in a straight line. That acceleration would be sensed by people in the car as a lateral force away from the center of the race track, and that's called a g force. 1 g is the force of gravity (9.8 m/sec), and therefore the g force of the car on the race track can be mathematically calculated if you know the speed of the car and the radius of the race track. Newton's laws of motions would apply here, and the g force would be equal to, and opposite, the acceleration.

Hope that helps!

Answer 2

there are two types of acceleration in circular motion, the linear acceleration and centripetal acceleration.

imagine going in a car, the acceleration in the car's speedometer during a corner is the linear acceleration

however the car may be going at a constant speed and still have an acceleration, and that is:

centripetal acceleration, which is almost imaginary and it's what holds the car from going out of the curve.

centripetal acceleration always points towards the center of the circle and it is represented as:

a = v^2 / r

centripetal acceleration equals the velocity(car) squared over the radius of the circle

Answer 3

Well, if acceleration is defined as the change in velocity over time, then in circular motion velocity must be changing.

Velocity change can be defined as either a change in speed or direction, since when something travels in a circular motion, the direction the object moves is constantly changing.

Hence there may be no change in speed, but since there is a change in direction, hence a change in velocity.

As a = (v - u)/t this change in velocity results in an acceleration.

Answer 4

A constant force produces constant acceleration. So, to travel around in a circle, there must be a constant force. Even at a constant rate of rotation or constant angular velocity, the direction component of the velocity vector is always changing. If this centripital force is released the object will travel along a tangent to the circle at the point of release.

Answer 5

Acceleration is defined by a speed and a direction. If you slam on the gas or on the brakes, you'll either accelerate or decelerate because your speed changes. When you move in a circle, you are constantly changing direction, therefore, constantly accelerating.

the easy way to think of it is: anything your body feels while moving is an acceleration

Answer 6

i think of it relies upon on the "furniture". the two will do. style certainly facilitates from what i've got been instructed and on the spot to do. It additionally facilitates to get good down there, get a solid look, breath gently on any any section that desires interest...and repeat as oftentimes as necessary. no longer something like a solid dusting.

Answer 7

because there is a change in the direction of the velocity (a vector quantity)even if the magnitude of the velocity remains constant

Answer 8

It does, initially, because going around a curve will increase the velocity of an object, but once a certain v. is reached, it will stay there. See the laws of centripetal force.