PROCEDURE

$1.$ Suspend the spring from a rigid support. Attach a pointer and a hook from $.$

free end.

$2.$ Hang a $20$ g hanger from the hook.

$3.$ Set the vertical wooden scale such that the tip of the pointer comes over the

the scale.

$4.$ Note the reading of the position of the tip of the pointer on the scale. Record the reading in

loading column against zero load. $.$

$5.$ Gently add a $20$ g slotted weight to the hanger. The pointer tip moves down.

$6.$ Wait for few minutes till the pointer tip comes to rest. Repeat step $4.$

$7.$ Repeat steps $5$ and $6$ till five slotted weights have been added.

$8.$ Now remove one slotted weight. The pointer tip moves up$.$ Repeat step $6.$ Record the

reading in unloading column.

$9.$ Repeat step $8$ till only hanger is left.

$10.$ Record your observations as given below.

OBSERVATIONS

Least count of vertical scale $=0\mathrm{.}1$ cm$.$

Table for load and extensio