The 1.5kg cylinder C travels along the path described by r sin m  0.6   . If arm OA is rotating counterclockwise with an angular velocity of   3 / rad s, determine the force exerted by the smooth slot in arm OA on the cylinder at the instant 60o   . The spring has a stiffness of 100 / N m and is unstretched when 30o   . The cylinder is in contact with only one edge of the slotted arm. Neglect the size of the cylinder. Motion occurs in the vertical plane (which means to account for gravity)

unbalanced force

explanation:

root word, prefixes, and suffixes

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.