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Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionKinematicsMedium2 minQB

PhysicsMediumsingle choice

Figure shows the total acceleration and velocity of a particle moving clockwise in a circle of radius 2.5 m at a given instant of time. At this instant, find: (a) the radial acceleration, (b) the speed of the particle and (c) its tangential acceleration.

Options:

Answer:

Solution:

(a) $a_{r} = a cos 3 0^{\circ}$
$= 25 \times \frac{3}{2}$
$= 21.65 m / s^{2}$ .
(b) $a_{r} = \frac{v ^{2}}{R}$
gives $v = a_{r} R$
$= 21.65 \times 2.5$
$= 7.35 m / s$ .
(c) $a_{t} = a sin 3 0^{\circ}$
$= 25 \times \frac{1}{2}$
$= 12.5 m / s^{2}$ .

Stream:JEESubject:PhysicsTopic:Circular MotionSubtopic:Kinematics

⏱ 2mℹ️ Source: QB

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