A simple harmonic motion is represented by y(t)=17 sin(20t+0.5) . . .

Questions : A simple harmonic motion is represented by y(t)=17 sin(20t+0.5). The amplitude of the SHM is 

a) A=30

b) A=17

c) A=20

d) A=5

Doubt by Sanya

Solution : 
y(t) = 17 sin(20t+0.5)
on comparing the above equation with standard equation for displacement in SHM
y(t) = A sin(ꞷt+ϕ₀)

we get
A=17

Hence, b) A=17 would be the correct option.