PhysicsNEET 2019Simple harmonic motion: equations, energy

Oscillations

A particle P moves in a circle of radius 3 m, centred at the origin in the $x y$ -plane, with period $T = 4$ s. At $t = 0$ , P is at the topmost point of the circle (maximum $y$ -displacement). The $y$ -projection of the position vector of P, as a function of time, is:

A. $y (t) = - 3 cos 2 π t$ m
B. $y (t) = 4 sin (\frac{π t}{2})$ m
C. $y (t) = 3 cos (\frac{3 π t}{2})$ m
D. $y (t) = 3 cos (\frac{π t}{2})$ m✓

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Oscillations

More from this chapter in past papers