Questions and Answers - Spring Balance & Motion in a Lift

? 201V 4kg 30r Find 'a' of the block ? ans: longer forever a=30-20 panging 2011 4kg 30N = 10 4 Ora account 10/10 4 =2.sm/s C.P.

M ? YON 50N 3kg 201Y that aw ans: a = 70-40 3 = 30 =10m/52 3 ? 5m/s' ohio go gaison : 30N 4kg 10013 ans: a= TDF all mass 5= F-30 4 20 = F-30 F = 50 N Cordon a

if ? Find real weight of a body is 500N. the n find apparent weight of the body in a lift? if lift is moving a) UP with constant velocity 5m/s b) Down with constant acceleration 5m/s2 c) Up with constant acceleration 5m/s' dd if lift machanism fapls. ans: a) R = mg real weight = Appareptic cight a = 0 W= soon V = Sm/s m = 500=50 mg = 500 10 R=mg = 500N 6) R=m (g-a) = 50(10-5) = 50X5 =250W c) R=m (g+a) = 50(10ts) d) Ro = 50VIS = 20 9 son