Question: At the same instant, if the component of the force at joint (A) along (A B) is (30 mathrm{~N}), then the magnitude of the joint

At the same instant, if the component of the force at joint \(A\) along \(A B\) is \(30 \mathrm{~N}\), then the magnitude of the joint raction at \(O_{2}\)

(a) is zero

(b) is \(30 \mathrm{~N}\)

(c) is \(78 \mathrm{~N}\)

(d) cannot be determined from the given data

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