For particle P revolving round the centre O with radius of circular path r and angular velocity ω, as shown in below figure, the projection of OP on the x-axis at time t is

Question

G1 Physics · Accepted Answer

At t=0 the radius OP makes 30°=π/6 with the +x-axis. With angular speed ω in the shown sense, the angular position is ωt+π/6. The x-projection is therefore x(t)=r cos(ωt+π/6). Correct option: 1.