Applied Mathematics for Electrical Engineering (3130908)

BE | Semester-3   Winter-2019 | 26-11-2019

Q3) (b)

The velocity v of a particle at a distance s from a point on its linear path is given by the following data:
 
Time   ( t 0 5 10 15 20 25 30
 Speed ( v ) 30 24 19 16 13 11 10
 
Estimate the time taken by the particle to travel the distance of 20 m using Simpson’s 1 3 ^rd rule.

Given that, h =  5
 
We know that, v = ds dt 
 
We know ,  dt = 1 v ds
 
We know ,  t = 030 1 v  ds
 
Time   ( t 0 5 10 15 20 25 30
 Speed ( v ) 30 24 19 16 13 11 10
1 v  1 30  1 24  1 19  1 16  1 13  1 11  1 10 
 
By Simpson's 1 3 rd rule,
 
abf x  dx =  h 3  y0 + y6  + 4  y1 + y3 + y5  + 2  y2 + y4    
 
abf x  dx =  5 3 (  1  30  +  1  10  ) + 4 (  1  24  +  1  16  +  1  11  ) + 2 (  1  19  +  1  13  )   
 
abf x  dx = 5 3  1.1727   
 
abf x  dx = 1.9546