A traffic light is suspended at rest from two cables that meet at a point above the light

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

Problem

20\,\text{kg}

traffic light is suspended at rest from two cables that meet at a point above the light. The left cable makes a

35^{\circ}

angle above the horizontal; the right cable makes a

55^{\circ}

angle above the horizontal. What is the magnitude of the tension in the right-hand cable? (Assume

g = 9.8\,\text{m/s}^2

.) (a)

1.4\times10^{2}\,\text{N}

(b)

1.6\times10^{2}\,\text{N}

(c)

1.1\times10^{2}\,\text{N}

(d)

1.7\times10^{2}\,\text{N}