A crate rests on a frictionless incline

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A 10 kg10\,\text{kg} crate rests on a frictionless 30∘30^{\circ} incline. It is held stationary by a light rope that runs parallel to the surface of the incline and is attached to the crate uphill. What is the magnitude of the tension in the rope? (Use g=9.8 m/s2g = 9.8\,\text{m/s}^2.) (a) 8.5×101 N8.5\times10^{1}\,\text{N} (b) 5.0×101 N5.0\times10^{1}\,\text{N} (c) 4.9×101 N4.9\times10^{1}\,\text{N} (d) 9.8×101 N9.8\times10^{1}\,\text{N}

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