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Question

Copy and paste this link to see the image: http://session.masteringphysics.com/problemAsset/1263407/4/1026440.jpg Assume that F1 = 46 N, F2= 44 N, and F3= 92N In object A indicated in the figure, what magnitude of force F is needed to put the object into rotational equilibrium about the axis shown? In object B indicated in the figure, what magnitude of force F is needed to put the object into rotational equilibrium about the axis A shown? In object C indicated in the figure, what magnitude of force F (if any) is needed to put the object into rotational equilibrium about the axis A shown? In object D indicated in the figure, what magnitude of force F (if any) is needed to put the object into rotational equilibrium about the axis A shown? In object E indicated in the figure, what magnitude of force F(if any) is needed to put the object into rotational equilibrium about the axis A shown? After you have found the F required to put the object into rotational equilibrium, find out which (if any) of these objects is also in translational equilibrium.

Explanation / Answer

taking moment about A a) 46*.3=F*.1 =>F=138N b)46*.1=F*.3 =>F=15.33N c)46*.3+44*.2=F*.1 =>F=226N d)46*.1=F*.3 =>F=15.33N(translation equilibrium) e)92*.15=F*.1+46*.3 =>F=0(translation equilibrium)

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