1A) A 0.3-kg block, attached to a spring, executes simpleharmonic motion according to x = 0.08 cos (35 rad/sâ‹…t), where x isin meters and t is in seconds. Find the total energy of thespring-mass system.
Ans.E =1.18 J
1B) A 1.5-kg cart attached to an ideal spring with a forceconstant (spring constant) of 20 N/m oscillates on a horizontal,frictionless track. At time t = 0.00 s, the cart is released fromrest at position x = 10 cm from the equilibrium point. Find theposition of the cart and its velocity at t = 5.0 s
Ans. x=8.25 cm
