AIEEE 2012 | Circular Motion Question 72 | Physics

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AIEEE 2012

MCQ (Single Correct Answer)

-1

Two cars of masses m₁ and m₂ are moving in circles of radii r₁ and r₂, respectively. Their speeds are such that they make complete circles in the same time t. The ratio of their centripetal acceleration is

m₁r₁ : m₂r₂

m₁ : m₂

r₁ : r₂

1 : 1

AIEEE 2010

MCQ (Single Correct Answer)

-1

For a particle in uniform circular motion the acceleration $$\overrightarrow a $$ at a point P(R, θ) on the circle of radius R is (here θ is measured from the x–axis)

$$ - {{{v^2}} \over R}\cos \theta \widehat i + {{{v^2}} \over R}\sin \theta \widehat j$$

$$ - {{{v^2}} \over R}\sin \theta \widehat i + {{{v^2}} \over R}\cos \theta \widehat j$$

$$ - {{{v^2}} \over R}\cos \theta \widehat i - {{{v^2}} \over R}\sin \theta \widehat j$$

$${{{v^2}} \over R}\widehat i + {{{v^2}} \over R}\widehat j$$

AIEEE 2010

MCQ (Single Correct Answer)

-1

A point $$P$$ moves in counter-clockwise direction on a circular path as shown in the figure. The movement of $$P$$ is such that it sweeps out a length $$s = {t^3} + 5,$$ where $$s$$ is in metres and $$t$$ is in seconds. The radius of the path is $$20$$ $$m.$$ The acceleration of $$'P'$$ when $$t=2$$ $$s$$ is nearly.

AIEEE 2010 Physics - Circular Motion Question 72 English

AIEEE 2010 Physics - Circular Motion Question 72 English

$$13m/{s_2}$$

$$12m/{s^2}$$

$$7.2m{s^2}$$

$$14m/{s^2}$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

Which of the following statements is FALSE for a particle moving in a circle with a constant angular speed?

The velocity vector is tangent to the circle.

The acceleration vector is tangent to the circle.

The acceleration vector points to the centre of the circle.

The velocity and acceleration vectors are perpendicular to each other.

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