A screw gauge gives the following reading when used to measure the diameter of a wire.Main scale reading : 0mm Circular scale reading : 52 divisionsGiven that 1mm on main scale corresponds to 100 divisions of the circular scale.The diameter of wire from the above data is:
A mass m hangs with the help of a string wrapped around a pulley on a frictionless bearing. The pulley has mass m and radius R. Assuming pulley to be a perfect uniform circular disc, the acceleration of the mass m, if the string does not slip on the pulley, is: