3. The automobile bumper jack shown at Fig. 3 is subjected to a 4000 N downward load. Starting with a free-body diagram of BCD, determine the force supported by the roller C. Note that roller B does...

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Extracted text: 3. The automobile bumper jack shown at Fig. 3 is subjected to a 4000 N downward load. Starting with a free-body diagram of BCD, determine the force supported by the roller C. Note that roller B does not contact the vertical column. [ Ans : 6470 N]. Fig. 3 Fig. 4 150 mm 150 mm 400 mm -A 4000 N 4100 mm -700 mm 240 mm 300 mm 100 mm 375 mm 60 D 1000 mm