Q 26

An ideal spring with a force constant (spring constant)of 15 N/m is initially compressed by 3.0 cm from its uncompressed position.How much work is required to compress the spring an additional 4.0 cm?
A)0.0068 J
B)0.012 J
C)0.024 J
D)0.030 J

Q 27

It takes 87 J of work to stretch an ideal spring from 1.4 m to 2.9 m from equilibrium.What is the value of the spring constant (force constant)of this spring?
A)27 N/m
B)77 N/m
C)52 N/m
D)39 N/m

Q 28

An ideal spring with a spring constant (force constant)of
Is stretched from equilibrium to 2.9 m.How much work is done in the process?
A)93 J
B)186 J
C)47 J
D)121 J