The 6-kg block is confined to move along the smooth parabolic path. The attached spring...

The 6-kg block is confined to move along the smooth parabolic path. The attached spring restricts the motion and, due to the roller guide, always remains horizontal as the block descends. If the spring has a stiffness of k = 10 N/m, and unstretched length of 0.5 m, determine the normal when of the path on the block at the instant x = 1 m when the block has a speed of 4 m/s Also, what is the rate of increase in speed of the block at this point') Neglect the mass of the roller and the spring.