To calculate Hooke Law:
            
            	
            
                - 
                    
What you want to calculate
                    
                     
                    
                 
                - 
                    
Spring Force Constant(k)
                    N/m
                 
                 - 
                    
Distance from Equilibrium(x)
                    
                    m
                 
               - 
                    
Spring Equilibrium Position(x0) 
                    
                    m
                 
                - 
                
Force(Fx)
                
                N
                 
                 - 
                    
                         
                     
             
              
             
              
            
            
             
            Formula:
                Force: 

	            Spring Force Constant: 

	            Distance from Equilibrium: 

	            Spring Equilibrium Position: 

	            where,
	            F
x = Force, 
	            k = Spring Force Constant, 
	            x =Distance from Equilibrium,
	            x
0 = Spring Equilibrium Position.
              
                 In short Hooke's law can be explained as " F = kx" and to explain it further Hooke’s law states that force need to compress or extend a spring is directly proportional to the distance covered and constant factor i.e. stiffness is considered during this calculation.
	             
                 Know more - 
http://en.wikipedia.org/wiki/Hooke's_law