Answer to Question #227555 in Classical Mechanics for ravi

Question

The following data relate to a four-link mechanism :

2.

  Link Length Mass

AB 60mm 0.2kg BC 200mm 0.4kg CD 100mm 0.6kg AD 140mm

MOI about an axis through centre of mass

80 kg. mm2 1600 kg. mm2 400 kg. mm2

          AD is the fixed link. The centres of mass for the links BC and CD lie at their mid-point whereas the centre of mass for link AB lies at A. Find the drive torque on the link AB at the instant when it rotates at an angular velocity of 47.5 rad s counter clockwise and angle DAI is 135 degree. Neglect gravity effects.

Note : All figures must be drawn with proper dimensions (reducing scale may be used) a

Answer 1

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