A block of mass lies on a horizontal frictionless table

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

Problem

A block of mass mm lies on a horizontal frictionless table. It is pulled by a light string that makes an angle θ\theta above the horizontal and exerts a constant tension TT. Which expression gives the normal reaction RR exerted by the table on the block? (a) R=mgR = mg (b) R=mg+Tsin⁡θR = mg + T\sin\theta (c) R=mg−Tsin⁡θR = mg - T\sin\theta (d) R=mg−Tcos⁡θR = mg - T\cos\theta

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