A horizontal force F pushes a 10 kg block up a fricitionless ramp with a circular contour, the radius of curvature of the slop contour is 15 m . the force changes with time to maintain a constant velocity of 2 m/s up the ramp if the angle is 20 deg and g is 9,81 m/s^2
(a) Calculate the normal acceleration of the block.
(b) calculate the magnitude of the force at the instant where the angle is 20 deg.