A 1.34 kg ball is connected by means of two massless strings, each of length L = 1.70m, to a vertical, rotating rod. The strings are tied to the rod with separation d=1.70 m and are taut. The tension in the upper string is 35 N. a) Draw the free body diagram of the ball. Choose an appropriateset of axes (explain your choice) and draw a component diagramwith respect to the axes you have chosen. What are the:b) Tension in the lower stringc) The magnitude of the net force on the ball andd) Speed of the balle) What is the direction of the net force on the ball

a.) is the correct answer.

explanation:

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speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.