Q1. A merry-go-round rotates at the rate of 0.30 rev/s with an 80 kg man standing at the point 2.0 m from the axis of rotation.
What is the new angular speed when the man walks to a point 0.8 m from the center? Assume that the merry-go-round is a solid 28 kg cylinder of radius 2.0 m.
Q2. What is the velocity of the beam of electrons that go undeflected when passing during perpendicular electric and magnetic fields of magnitude 4700 V/m and 3.6×10-3 T, correspondingly?