two identical blocks,A and B , each of mass 2kg are connected by a
light string which passes over a smooth pulley
block B rests on the floor and block A is 10m above the floor.
a)A mass of 1 kg is then placed on block A
find
(i) acceleration of the system
(ii)the time taken for block A to reach the floor,
(iii)the velocity of the system just before block A hits thr floor
b) after block A has reached thr floor
(i)what is the resultant force acting on block A?Explain
(ii)what is the resultant force acting on block B?Explain
(iii)what is the maximum height reached by block B?
更新1:
to: Uncle Michael hi! a)i) 為什麼計到5? ii) 為什麼a=10?
