Answer:
Banana Splits with tomatoes sauce on top (but no ketchup or Mustard) in my knee with a Balenciaga private jet.
Explanation:
There is no Explanation. Look at the answer.
Since the track is friction less, block’s kinetic energy at the bottom of the track is equal to its potential energy at the top of the track.
PE = 81 * 9.8 * 3.8 = 3016.44 J
Work = 1/2 * 1888 * d^2
PE = Kinetic energy at the base.
1/2 * 1888 * d^2 = 3016.44
d = 1.78 approx 1.8
F = Ke = 1888 * 1.8 = 3398.4N
sorry i did not mean to answer