A 16-lb force is being applied to end D of arm BCD. The arm is connected by pins to crank AB at point B, and to a frictionless collar at point C. Determine the couple M required to hold the system in equilibrium when 0 = 90°. Include both the magnitude and direction of couple M as part of your answer. 10 in. 12 in. B 7.5 in. 8 in. 6 in. 16 lb
A 16-lb force is being applied to end D of arm BCD. The arm is connected by pins to crank AB at point B, and to a frictionless collar at point C. Determine the couple M required to hold the system in equilibrium when 0 = 90°. Include both the magnitude and direction of couple M as part of your answer. 10 in. 12 in. B 7.5 in. 8 in. 6 in. 16 lb
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Transcribed Image Text:A 16-lb force is being applied to end D of arm BCD. The arm is connected by pins to crank
AB at point B, and to a frictionless collar at point C. Determine the couple M required to
hold the system in equilibrium when 0 = 90°. Include both the magnitude and direction of
couple M as part of your answer.
10 in.→ 12 in.→
В
7.5 in.
8 in.
M.
6 in.
16 lb
The solution to this problem requires a free-body diagram for each member of the
machine, and a sketch of the coordinate system used. Use the components of the forces
with EF, = 0 and EF, = 0 to apply EF = 0 for a member.
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