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

Last updated: 6/10/2023

12 A plank with a box on it at one end is gradually raised about the other end As the angle of inclination with the horizonta reaches 30 the box starts to slip and slide 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 CBSE AIPMT 201 respectively a 0 6 and 0 6 mg 0 b 0 6 and 0 5 04 and 0 2