Q- A 5 kg uniform ball lies between two mutually perpendicular smooth plans AB and BC. Determine the thrust of the ball against each plane if plane BC is inclined at 60 degree to the horizontal. (g = 10 m/s2)
A spherical capacitor has two different layers of dielectrics between its plates. Their permittivity are ϵ1 for a < r < r0 and ϵ2 for r0 < r < b. Find the capacitance of this system by finding the total energy of the fields between the plates.
Q- At t = 0, car A starts from rest at point 1. It moves with an acceleration of 0.4 t m/s^2. At the same time, car B starts from point 2, which is 225 m ahead, with a constant acceleration of 2 m/s^2 in the same direction. Find:
(a) Speed of car A at the end of the 225 m section.