||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

/* code_begins */

{{{D=var('D')
z=solve(25*D**2-1==0,D)
print z

$\pi r^{2} x \rho_{w} g  = - m \frac{d^{2}x}{dt^{2}} $

{{{id=1|
# but for water rho_w = 1

#given that r = 30 * 10^(-2) m

Buoyant_force = ( ((9.8* (30 * 10^-2)**2))/ 3.1451 )* 9.8
print Buoyant_force #(in newton)
///
2.74827509459159
}}}

{{{id=4|

///
}}}}}}

/* code_ends */

 * '''Solution by''': 
      sawankumar khillare,teaching Aurangabad
   * ganesh, developer, space
   * bhanukiran, student, technical university of Delft
   * saransh, student, sobhit university