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In a four-bar linkage, S denotes the shortest link length, L is the longest link length, P and Q are the lengths of other two links. At least one of the three moving links will rotate by 360° if
  • a)
    S + L ≤ P + Q
  • b)
    S + L > P + Q
  • c)
    S + P ≤ L + Q
  • d)
    S + P > L + Q
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In a four-bar linkage, S denotes the shortest link length, L is the lo...
According to Grashoff’s Law for a four bar mechanism, the sum of shortest and longest link lengths should not be greater than the sum of the remaining two link length.
i.e. S + L ≤ P + Q
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Most Upvoted Answer
In a four-bar linkage, S denotes the shortest link length, L is the lo...
A/c to grashof law shortest+longest link less than equal to other 2 link.
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Community Answer
In a four-bar linkage, S denotes the shortest link length, L is the lo...
Degrees in a complete cycle if the following conditions are met:

1. S + P > L - Q
2. S + Q > L - P
3. P + Q > L - S

These conditions ensure that the four-bar linkage is not a degenerate configuration, where the links overlap or are collinear. In such a case, the four-bar linkage would not be able to complete a full rotation.

If these conditions are satisfied, at least one of the moving links will rotate by 360 degrees in a complete cycle. The specific link that rotates depends on the initial position of the four-bar linkage and the configuration of the input and output links.
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In a four-bar linkage, S denotes the shortest link length, L is the longest link length, P and Q are the lengths of other two links. At least one of the three moving links will rotate by 360° ifa)S + L ≤ P + Qb)S + L > P + Qc)S + P ≤ L + Qd)S + P > L + QCorrect answer is option 'A'. Can you explain this answer?
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