A planar mechanism has 8 links and 10 rotary joints. The

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A planar mechanism has 8 links and 10 rotary joints. The number of degrees of freedom of the mechanism, using Grubler's criterion, is

1. 0
2. 1
3. 2
4. 3

Correct Option: B

By Gruebler’s criterion,
F = 3(l – 1) – 2j
= 3(8 – 1) – 2 × 10 = 1