W X A massless rigid rod of length 3d is pivoted at a fixed point W, and two forces each of magnitude F are applied vertically upward as shown. A third vertical force of magnitude F may be applied, either upward or downward, at one of the labeled points. With the proper choice of direction at each point, the rod can be in equilibrium if the third fo Cio on

Elements Of Electromagnetics
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Hello, I know the answer is v or x only but I want to know how to get to that answer. Please help.

W
-d -d
A massless rigid rod of length 3d is pivoted at a fixed point W, and two forces each of magnitude F are applied
vertically upward as shown. A third vertical force of magnitude F may be applied, either upward or downward, at
one of the labeled points. With the proper choice of direction at each point, the rod can be in equilibrium if the
third force of magnitude F is applied at point
O a. V or X only
O b. V, W, or X
c. V or Y only
O d. Y only
Transcribed Image Text:W -d -d A massless rigid rod of length 3d is pivoted at a fixed point W, and two forces each of magnitude F are applied vertically upward as shown. A third vertical force of magnitude F may be applied, either upward or downward, at one of the labeled points. With the proper choice of direction at each point, the rod can be in equilibrium if the third force of magnitude F is applied at point O a. V or X only O b. V, W, or X c. V or Y only O d. Y only
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