Hi -

I've just finished drafting an assignment in Physics relating to pendulum swing. I'm happy with it so far but before submitting it would be grateful for expert opinion please ?

(The result from the (30 cm) length of string

are : 6.49, 5.50, 5.55, 5.80, 5.75, 5.85, 5.54 seconds per swing

90cm results : 9.60, 9.65 , 9.35 , 9.40 , 9.38 seconds per swing

Very many thanks in advance,

A

The question is :

The equation below links the time,T, needed for the pendulum to return to its original position to the length, l,of the string and the acceleration due to gravity,g: