A0t1 ABS ABS
B0t1 ABS ABS
C0t2 ABS ABS
Dt1t2 ABS ABS
5 15kg 30
10m/s2
A 25 N
B 50 N
C 150N
D 75N
62018 10 1
29 31
35
A
B
C 29 31 35
D
7
3 J 4 J
A7 J B 5 J
CJ D1 J
8 m
ACBC 30 g a= g
ACBC F1F2
