PROCEDURES AND OBSERVATIONS

The experiments involve four tests.

1. Set up all the apparatus or equipments as shown.

2. Pivot bar should be in balance and pulleys must be attached using bolt and nut.

3. Then, we hang the weight hook according to the data given on the lab sheet.

TEST 1 Hang weight hooks Since the weight of

hooks each weight 0.1N, we should add 1.9N hooks in order to make it total weight 2N.

Value F1 and F2 are recorded

Distance d1 and d2 are measured and recorded

TEST 2 The right hand

weight hook is adjusted to a hole nearer the pivot bar

The bar are balanced in the level position with sufficient load

The weight value F2 and distance d2 are recorded.

TEST 3 The right hand

hook which is without weight are hang through the pulley

The weight hook is loaded to balance the bar

The weight value F2 and the perpendicular distance d2 are recorded.

TEST 4 Panel is set up as

shown in figure

The procedure in Test 3 are repeated in Test 4 ,with cord passing over the left hand pulley and attach to the lowest hole of the centre of the bar.

Weight value F2 and distance are recorded

OBSERVATIONSWhat we observed during this experiment?

The sum of the forces in one direction is equal to the sum of the forces in the opposite direction;

The sum of the anticlockwise moments about any point is equal to the sum of the clockwise moments about the point.

Turning moment was measured by multiply force acting on a body and perpendicular distance between force and pivot, where

M = F X r M = Turning moment

F = Force acting on a bodyr = Distance from pivot

When performing this experiment, we should use different weights and distances . The results should be entered in a table and a different point chosen about which moments are taken.

Two factors involved in this experiment: i. The magnitude of of the force appliedii. The distance of its line of action from

the axis about which turning takes place.