AP EAPCET 08-Jul-2022 Shift 2 Paper

Due to acceleration of bus, block experiences a backward acceleration a
Block will move if

Where, f= friction force
⇒ma≥µmg⇒a≥µg=0.2×10
⇒a≥2ms−2
Hence, maximum acceleration of the bus such that the block remain stationary is 2m∕s2.