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The lengths of members BC and CE in the frame shown in the figure are equal. All the members are rigid and lightweight, and the friction at the joints is negligible. Two forces of magnitude Q > 0 are applied as shown, each at the mid-length of the respective member on which it acts. Which one or more of the following members do not carry any load (force)?

The lengths of members BC and CE in the frame shown in the figure are equal. All the members are rigid and lightweight, and the friction at the joints is negligible. Two forces of magnitude Q > 0 are applied as shown, each at the mid-length of the respective member on which it acts. Which one or more of the following members do not carry any load (force)? Correct Answer GH

Explanation:

If at a joint three-member meet out of which two are collinear then the force in the third member will be zero provided there is no load or reaction at the joint.

Additional Information

 If two non-collinear members meet at a joint and there is no force at that joint then the forces on two members will be zero.

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