In Fig., what will be the sign of the velocity of the point ρ, which

1.	In Fig., what will be the sign of the velocity of the point ρ, which is the projection of the velocity of the reference particle P. P is moving in a circle of radius R in anticlockwise direction?
Answer» Projection of P on x-axis \(x=A\,cos(wt\,+\,\phi)\) \(v_x=\frac{dx}{dt}=-Aw\, sin(wt + \phi)\) ∴ sign of velocity is negative

In Fig., what will be the sign of the velocity of the point ρ, which is the projection of the velocity of the reference particle P. P is moving in a circle of radius R in anticlockwise direction?

Answer»

Projection of P on x-axis

\(x=A\,cos(wt\,+\,\phi)\)

\(v_x=\frac{dx}{dt}=-Aw\, sin(wt + \phi)\)

∴ sign of velocity is negative

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In Fig., what will be the sign of the velocity of the point ρ, which is the projection of the velocity of the reference particle P. P is moving in a circle of radius R in anticlockwise direction?

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