Q. A disk with a mass of 37.5 kg and a radius of 38.3 cm is mounted on a frictionless horizontal axle. A string is wound many times around the disk and then attached to a 56.4 kg block. Find the acceleration of the block, assuming that the string does not slip.
Q. Light of wavelength 575 nanometers falls perpendicularly on a double-slit and the third order bright fringe is seen at an angle of 6.5 degrees.What is the separation between the double slits?