A stone, of mass m, is attached to a strong string and whirled in a vertical circle of radius r. At the exact top of the path the tension in the string is 3 times the stone's weight. The stone's speed at this point is given by

When the angular velocity is increasing, the angular acceleration vector points -----------.

The tangential acceleration 𝑎_𝑇 relates to angular acceleration α (measured in radian per second squared) by the equation-----.

A 175-kg ball on the end of a string is revolving uniformly in a horizontal circle of radius 0.500 m. The ball makes 2.00 revolutions in a second. Determine the speed of the ball.

What is the angle of banking which would allow vehicles to round a curve of 900 ft radius at 40 mph without friction ?

An object moves with a constant speed of 30 m/s on a circular track of radius 150 m. What is the acceleration of the object?

An object is moving in a COUNTERCLOCKWISE circle at constant speed. What is the direction of the acceleration at point B?

A wheel rotates with a constant angular acceleration of 3.50 rad𝑠−𝟐 . (a) If the angular speed of the wheel is 2.00 rad 𝑠−𝟏 at 𝑡𝑖 = 0, through what angular displacement does the wheel rotate in 2.00 s?

For an object moving in uniform circular motion, does the velocity change? why?

What force is centripetal force in the given figure?

An object is moving in a COUNTERCLOCKWISE circle at constant speed. What is the direction of the velocity vector at point B?

In uniform circular motion, the tangential velocity is always ___________ to the circular path.