Aball is revolving horizontally in a circle of radius 1.8 m, and is held by a rigid, massless rod. the mass of the ball is 0.1 kg. the path of the ball has a constant linear speed of 27 m/s. what is the angular velocity of the orbit in rad/s?

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm

Why is no-till farming more sustainable than many traditional methods of farming

Meaning of a nonzero y-intercept to a graph of reaction distance versus speed