[填空题]
A 2.00-kg pumpkin osc8b :qij2dc s1f7gpiu9qq8yx pg1o 35billates from a vertically ha9 pmay9t2:z dc0ggbh5nging light spring once every 0.65 5 ggpch2t:99 yd z0mabs.
(a) Write down the equation giving the pumpkin’s position y (+ upward) as a function of time t, assuming it started by being compressed 18 cm from the equilibrium position (where ), and released. y = ( m)cos()
(b) How long will it take to get to the equilibrium position for the first time? s
(c) What will be the pumpkin’s maximum speed? m/s
(d) What will be its maximum acceleration, and where will that first be attained?