A uniform ladder of length 10.0 m and mas 16.0 kg is resting against a vertical wall making an angle of `37^@` with it. An electrian weighing 60.0 kg climbs up the ladder. If the stays on the ladder at a point 8.00 m from the lower end, will be normal force and the force of friction on the ladder by the ground? What should be the minimum coefficient of friction for the electician to work safely?