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∑F=0
N-W=0
N=20 N
fg=M N
=0,2 x 20
=4 N
∑F=m a
T-fg=m a
T-4=2 a
T=2a+4 ... pers (1)
tinjau B
∑F=m a
W-T=m a
10-T=a
T=10-a ... pers (2)
T=2a+4
T=10-a -
0=3a-6
3a=6
a=2 m/s²
S=V0 t + 1/2 x a x t²
25=0 x t + 1/2 x 2 x t²
25=t²
t=√25
t=5 s
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