A 1.40 kg object is held 1.15 m above a relaxed, massless vertical spring with a force constant
of 300 N/m. The object is dropped onto the spring. How far does the object compress the
spring? m Repeat part (a), but now assume that a constant air-resistance force of 0.600 N acts
on the object during its motion. m How far does the object compress the spring if the same
experiment is performed on the moon, where g = 1.63 m/s2 and air resistance is neglected? m
Solution
a)mgh=.5*k*x^2 so x=.324 b)(mg-.6)h=.5*k*x^2 so x=.317 c)x=.132
of 300 N/m. The object is dropped onto the spring. How far does the object compress the
spring? m Repeat part (a), but now assume that a constant air-resistance force of 0.600 N acts
on the object during its motion. m How far does the object compress the spring if the same
experiment is performed on the moon, where g = 1.63 m/s2 and air resistance is neglected? m
Solution
a)mgh=.5*k*x^2 so x=.324 b)(mg-.6)h=.5*k*x^2 so x=.317 c)x=.132
