A plank with a box on it at one end is gradually raised

Last updated: 6/27/2023

A plank with a box on it at one end is gradually raised about the other end As the angle of inclination with the horizontal reaches 30 the box starts to slip and slides 4 0 m down the plank in 4 0 s The coefficients of static and kinetic friction between the box and the plank will be respectively NEET 2015 1 0 5 and 0 6 2 0 4 and 0 3 mg 3 0 6 and 0 6 4 0 6 and 0 5