Acceleration Due to Gravity Using 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