1.

Graph having variation of t-square with L .

Answer»

Finding the acceleration due to gravity

the time period of SIMPLE pendulum (I) and acceleration due to gravity (g), which is expressed by RELATION,

T=2π√l/g ----------(1)

for small AMPLITUDE oscillations,


T square= 4π square l/g
I.e;

g= 4πsquare l/t square-----------(2)
if we know the value of L and T, we can calculate the acceleration due to gravity , g at that place.

the l-t square graph

we can plot a graph between l and T2 square by taking l along the x axis and T2 along the y axis. The graph is a straight line.(graph is given above)

from the graph,


l/t square= AB/BC=---------cm square

g= 4π square (AB/BC)




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