#328 A sliding block C moves along

A sliding block C moves along - Mechanical Engineering

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Free Chegg Question

A sliding block C moves along a horizontal line Q2C. A rotation arm Q2B is 4 ft 3 in long and rotates around a center Q2. The connecting rod BC is 8 ft long. This rod is extended to D, making BCD 11 ft 9 in long. Make a drawing of this linkage and trace the path of D while the arm makes 1 complete revolution CCW. Locate points for each 15 deg movement of the arm QzB, beginning with Q2B coinciding with Q2C.

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Free Chegg Answer

Given: 

Crank length = Q₂B = 4ft 3 in = 52 inches

Connecting rod = BC = 8 ft = 96 inches

Extension link = BD = 45 inches

Tracing of point D at every 15⁰ CCW rotation of Crank Q₂B

 About Drawing 

• For the easy drawing, all dimensions from feet are converted to inches.
• Links at Crank angle 30⁰ is projected in the image and the links all other angles are in shaded color for a better view
• 24 trace of point D at every 15⁰ is shown in the figure