Questions

Does angular velocity increase or decrease with radius?

Does angular velocity increase or decrease with radius?

Linear/tangential velocity, in a circlular path, increases with the increase in radius and decreases with the decrease in radius. Hence, the angular velocity remains the same no matter what the change in radius is(W=V/r).

What happens to velocity when radius decreases?

In this case, again, velocity increases as radius is decreased, but to do that and remain in orbit, one must fire engines to speed the satellite up! Hence, v = wr, and since w is a constant independent of radius, v and r are directly proportional. Increased r will lead to increased v.

What causes angular velocity to increase?

Because angular momentum is the product of moment of inertia and angular velocity, if the angular momentum remains constant (is conserved), then the angular velocity (rotational speed) of the skater must increase.

What causes decreased angular velocity?

Since the rotational inertia of the system increased, the angular velocity decreased, as expected from the law of conservation of angular momentum. In this example, we see that the final kinetic energy of the system has decreased, as energy is lost to the coupling of the flywheels.

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What happens to velocity when radius increases?

If you change the radius by shortening the string slowly, the speed (velocity is not technically appropriate here, that’s a vector) will increase. In this case, again, velocity increases as radius is decreased, but to do that and remain in orbit, one must fire engines to speed the satellite up!

How does velocity change with radius?

For instance, the equation suggests that for objects moving around circles of different radius in the same period, the object traversing the circle of larger radius must be traveling with the greatest speed. In fact, the average speed and the radius of the circle are directly proportional.

Does angular velocity depend on radius?

Whereas the linear velocity measures how the arc length changes over time, the angular velocity is a measure of how fast the central angle is changing over time. ω=θt. The symbol ω is the lower case Greek letter “omega.” Also, notice that the angular velocity does not depend on the radius r.