(i) A block is connected to an ideal spring on a horizontal frictionless surface. The block is pulled a short distance and released. Plot the variation of kinetic energy of the block vs the spring potential energy.
(ii) A ball of mass 200 g is projected from the top of a building 20 m high. The projection speed is 10 m/s at an angle `theta=sin^(-1)(3/5)` from the horizontal. Sketch a graph of kinetic energy of the ball against height measured from the ground. Indicate the values of kinetic energy at the top and bottom of the building and at the highest point of the trajectory, specifying the heights on the graph. Neglect air resistance and take `g = 10 m//s^(2)`

Answer

`(##IJA_PHY_V01_C04_E01_009_Q01##)`