A solid ball, of radius 45 mm, rolls down an inclined plane of length 2.5 m. The sphere takes a time of 6.0s to roll down the plane. Assume that the ball does not slip. 1 = 2/5mr^2? a. Calculate the translational velocity of the sphere as it reaches the end of the plane.

b. Calculate the angular velocity of the spere as it reaches the end of the plane.

c. Determine the angle of inclination of the plane.

d. Comment on whether the assumption that the ball does not slip was appropriate in this instance.

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.