defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Physics Oscillations Simple Harmonic Motion
For displacement equation \(y = -2 cos( {\pi\over 6}-t)\), which of the following option is correct regarding amplitude A, angular frequency ω, initial phase ϕ?
1
A = 2, ω = 1 and \(\phi = -{\pi \over 6}\)
2
A = -2, \(\omega = -{\pi \over 6}\), and ϕ = 1
3
A = -2, ω = 2 and \(\phi = -{\pi \over 6}\)
4
A = -2, \(\omega = {\pi \over 6}\), and ϕ = t