PROGRAM
#include<iostream>
#include<math.h>
using namespace std;
int main()
{
int i,n;
float l[10],t1[10],t2[10],t[10],r[10],s=0,m,g;
cout<<"Enter the no.of trial:";
cin>>n;
for(i=0;i<n;i++)
{
cout<<"\nEnter the value of L:";
cin>>l[i];
cout<<"\nEnter the value of T1:";
cin>>t1[i];
cout<<"\nEnter the value of T2:";
cin>>t2[i];
t[i]=(t1[i]+t2[i])/(2*20);
r[i]=l[i]/(pow(t[i],2));
cout<<"\nValue of (L/T^2) is:"<<r[i]<<"\n\n";
s=s+r[i];
}
m=s/n;
g=4*pow(3.14,2)*m;
cout<<"\n";
cout<<"\nLength\t\tPeriod\t\t(L/T^2)\n";
for(i=0;i<n;i++)
{
cout<<"\n\n"<<l[i]<<"\t\t"<<t[i]<<"\t\t"<<r[i];
}
cout<<"\n\nMean value of (L/T^2) is: "<<m;
cout<<"\nAcceleration due to gravity,g: "<<g<<" m/s^2\n\n";
return 0;
}
OUTPUT
Enter the no.of trial:8
Enter the value of L:.50
Enter the value of T1:28.3
Enter the value of T2:28.4
Value of (L/T^2) is:0.248842
Enter the value of L:.60
Enter the value of T1:31
Enter the value of T2:31.2
Value of (L/T^2) is:0.248136
Enter the value of L:.70
Enter the value of T1:33.5
Enter the value of T2:33.6
Value of (L/T^2) is:0.248756
Enter the value of L:.80
Enter the value of T1:35.8
Enter the value of T2:35.9
Value of (L/T^2) is:0.248984
Enter the value of L:.90
Enter the value of T1:38
Enter the value of T2:38.1
Value of (L/T^2) is:0.248653
Enter the value of L:1.00
Enter the value of T1:40
Enter the value of T2:40.1
Value of (L/T^2) is:0.249376
Enter the value of L:1.10
Enter the value of T1:42.1
Enter the value of T2:42.1
Value of (L/T^2) is:0.24825
Enter the value of L:1.20
Enter the value of T1:43.8
Enter the value of T2:44
Value of (L/T^2) is:0.249065
Length Period (L/T^2)
0.5 1.4175 0.248842
0.6 1.555 0.248136
0.7 1.6775 0.248756
0.8 1.7925 0.248984
0.9 1.9025 0.248653
1 2.0025 0.249376
1.1 2.105 0.24825
1.2 2.195 0.249065
Mean value of (L/T^2) is: 0.248758
Acceleration due to gravity,g: 9.81061 m/s^2
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