Answer:
Step-by-step explanation:
Let y be the position , A be amplitude ω be angular velocity 
motion of simple harmonic motion is given by the equation 
y = A Cos ωt 
angular frequency ω = 2π / T 
It is related with mass m and spring constant k as follows 
ω = 

So k increases then frequency increases , when m increases frequency decreases . 
Amplitude has no effect on frequency .
Phase angle has no effect on frequency .