What is the angular velocity at any point on the equator so that the body feels weightlessness?

What is the angular velocity of the hour hand of clock?

What is the velocity of a projectile at the highest point?

What should be the maximum average velocity of water in a tube of diameter 25mm so that the flow is laminar?

What is the phase difference between any two points on a wave front?

What is escape velocity? Find an expression for the escape velocity of a body when projected from the surface of the earth. Show that the escape velocity form the earth's surface is about 11.2 km/sec.

Two cars are going in two .concentric circular orbits of radius r, and r2 with angular velocities omegaavdeltaomega_2 what is the radio of their liner of their velocities?

Two heavy spheres each of mass 100 kg and radius 0.10 m are placed 1.0 m apart on a horizontal table. What is the gravitational force and potential at the mid point of the line joining the centers of the spheres? Is an object placed at that point in equilibrium? If so, is the equilibrium stable or unstable?

What is the angle between frictional force and instantaneous velocity of the body moving on a rough road?