The rod OA rotates clockwise with a constant angular velocity of 6 rad/s. Two pin-connected slider blocks, located at B, move freely on OA and the curved rod whose shape is a limacon described by the equation r=200(2?cos?)mm. Determine the magnitude of the acceleration of the slider blocks at the instant ?

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.