The Total solution for NCERT class 6-12
द्रव्यमान, m =1200 kgu = v (समान वेग)a = 0बल = m x a = 1200 x 0 = 0 Nस्थिति II :द्रव्यमान, m = 1200 kgत्वंरण, a = 0.2 m/s2बल = m x a = 1200 x 0.2 = 240 N