•For three
situations, the initial and final position,
•respectively,
along the x-axis for the block attached
•to a spring
are
•
•a) -3 cm, 2
cm;
•b) 2 cm, 3 cm;
and
•c) -2 cm, 2
cm.
•In each
situation is the work done by the spring force on the block +ve, -ve, or zero?