momen calculation of the center of gravity

1. ∑M + Ra
-15 (978) + 300 (1422) + 20 (1452) + 30 (2272) + 350 (2308) – Rb (2835) + 195 (2855) + 20 (3873) = 0
1296755 - Rb (2835) = 0
Rb = 681.10 kg
+ F
15 + 300 – Ra + 300 + 20 + 30 + 350 + 195 + 20 -681.10 = 0
-Ra + 548.9 = 0
Ra = 548.9 kg

2. a b c d e f g h
15 300 300 20 30 350 195 20
Ra Rb
1422
233.9 20
221
1018
26
970 30 820 36 527
0
15
66.10
86.10
110.10
466.10

3. a Front Bumper
b Power-train
c Front pass/seats
d Rear pass/ seats
e Fuel Tank
f Luggage/ spare wheel
g Rear Bumper
h Exhaust