A student hangs a weight on a newtonmeter. The energy now stored in the spring in the newtonmeter
is 4.5 x 10-2 J The student then increases the weight
on the newtonmeter by 2.0 N Calculate the total
extension of the spring. Spring constant = 400 N/m
Uses the equation Elastic potential energy = 0.5 x
spring constant x extension2 This is a multistep
calculation (Hint: first work out the original
extension, work out the extra extension when the
extra weight is added)
No