Q 78. At the same instant, if the component of the force at joint A along AB is 30 N, then the magnitude of the joint raction at 
(A) is Zero
(B) is 30 N
(C) is 78 N
(D) cannot be determined from the given data
Answer: (D)
Explanation:
Q 78. At the same instant, if the component of the force at joint A along AB is 30 N, then the magnitude of the joint raction at
(A) is Zero
(B) is 30 N
(C) is 78 N
(D) cannot be determined from the given data
Answer: (D)
Explanation:
