CHECKPOINT 4
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?