EXPERIMENT NO.4
OBJECTIVE:
To determine the tension in Gravesand Apparatus.
APPARATUS:
Frictionless Pulley, Base Frame, Spirit level, Spring
Balances, Hooks for spring balances, Gravesand apparatus Sheet.
Figure 4.1: Gravesand Apparatus
THEORY:
Tension is described as the pulling force transmitted axially by the means of a string or cable.
PROCEDURE:
Step#1: Set the
apparatus as shown in the figure.
Step#2: Apply
specific amount of forces F1,
F2, F3 at the given points with the help of hanging
loads/ weights.
Step#3: The
force is set in such as manner to attain the equilibrium position.
Step#4: The
forces in the cables can be found out with the help of calibrated spring and
then angle that the cable made with the horizontal can be found with the help
of scale affixed.
Step#5: Change
the load configuration and then repeat the same steps.
OBSERVATIONS:
Record the analytical and experimental data result in
tabular form.
Percentage Error:
P = actual
weight of body measured from spring balance.
P1
= calculated weight of body from experiment.
CALCULATIONS:
Verify the experimental results by finding the forces in the
cable analytically.
PRECAUTIONS:
1. Pulleys
should be friction free.
2. The
string used should be of in-elastic material.
3. There
should be no disturbance of air, vibration and therefore be kept minimum while
taking measurement.
CONCLUSION:
Discuss the effect of the changing position of the pulleys
and weight on the tension force.
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