In the figure shown the time period and the amplitude respectively. when m is left from rest when spring is relaxed are (the inclined plane is smooth)
(a) 2pi√(m/k), (mg sin θ)/k
(b) 2pi√((m sin θ)/k), (2 mg sin θ)/k
(c) 2pi√(m/k), (mg cos θ)/k
(d) None of the above
