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A roller support can resist how many components of force?

A roller support can resist how many components of force?

Engineering   Civil-Engineering   
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Answer #1

Roller support can resist only one component of force i.e component which is perpendicular to the surface on which it rests.It develops reaction only in one direction perpendicular to the surface (which can be horizontal, vertical or sloping). Roller supports are free to rotate and translate along the surface,no moment or resisting force along the surface is generated. e.g

If a roller rests on a horizontal surface only vertical reaction is developed upon loading(either vertical or inclined) at roller support and no resisting moment or horizontal reaction is developed at roller support.

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