Question

A four bar mechanism is made up of links of length 100,200,300 and 350 mm. if the 350 mm link is fixed, the number of links that can rotate fully is ______

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Answer :

1

s = 100, p = 200,l = 350, q = 300

  (s +l) =  350 + 100 = 450 <(p+ q)

  450 <  200 + 300

  450< 500

Grashoff’s law is satisfied.

350 mm link is fixed,

Then, shortest link = 100 mm s adjacent to fixed, will give crank only.

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