Task 3.5 (DISTINCTION) Describe and analyse mechanisms

300 rpm

EE

B

55⁰

ii.

VBA

A

D

C

The above slider crank mechanism has crank, AB, of length 80mm and the connecting

rod BC is of length 400mm. The crank rotates clockwise at a steady speed of 300 rpm. At

the instant shown, determine:

VCA

i. the velocity of the crank pin at B

the velocity of the piston

iii. the velocity of the point D which is at one quarter of the length of the connecting

rod from point C.