2016-2017
90 100
I
12 4 48 1-7 8-12
4 2 0
1 -
A0~1s 2m/s
B0~2s 3m
C0~1s 2~4s
D0~1s 2~4s
2 M m
a
A(M-m)g-ma
B(M+m)g-ma
C(M+m)g+ma
DMg-ma
3 O F
N T
AN T
BN T
CN T
DN T
4 A lkg = 0. 2 t=0
v0 F=1N
