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Chapter: 11th Physics : Practical Experiment

Acceleration Due to Gravity Using Simple Pendulum

To measure the acceleration due to gravity using a simple pendulum

ACCELERATION DUE TO GRAVITY USING SIMPLE PENDULUM

 

AIM

To measure the acceleration due to gravity using a simple pendulum

 

APPARATUS REQUIRED

Retort stand, pendulum bob, thread, meter scale, stop watch.

 

FORMULA

Acceleration due to gravity


where

T → Time period of simple pendulum (second)

g → Acceleration due to gravity (metre sec-2)

L → Length of the pendulum (metre)

 

DIAGRAM


 

PROCEDURE

·           Attach a small brass bob to the thread

·           Fix this thread on to the stand

·           Measure the length of the pendulum from top to the middle of the bob of the pendulum. Record the length of the pendulum in the table below.

·           Note the time (t) for 10 oscillations using stop watch

·           The period of oscillation T = t/10

·           Repeat the experiment for different lengths of the pendulum ‘L’. Find acceleration due to gravity g using the given formula.

 

OBSERVATIONS

To find the acceleration due to gravity ‘g’


 

MODEL GRAPH


 

RESULT

The acceleration due to gravity ‘g’ determined using simple pendulum is

i)    By calculation = . . . . . . . . . m s-2

ii) By graph = . . . . . . . . . m s-2

 

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