A horizontal pull of magnitude is applied at above the horizontal on a block resting…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

A horizontal pull of magnitude FF is applied at 30∘30^{\circ} above the horizontal on a block resting on a rough horizontal table. Which expression gives the normal reaction RR exerted by the table on the block? (a) R=mg+Fsin⁡30∘R = mg + F\sin 30^{\circ} (b) R=mg−Fcos⁡30∘R = mg - F\cos 30^{\circ} (c) R=mg−Fsin⁡30∘R = mg - F\sin 30^{\circ} (d) R=mgR = mg

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