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# A Particle Moves in a Circle of Radius 1.0 Cm at a Speed Given by V = 2.0 T Where V is Cm/S and T in Seconds. - Physics

ConceptCircular Motion

#### Question

A particle moves in a circle of radius 1.0 cm at a speed given by v = 2.0 t where v is cm/s and t in seconds.
(a) Find the radial acceleration of the particle at t = 1 s.
(b) Find the tangential acceleration at t = 1 s.
(c) Find the magnitude of the acceleration at t = 1 s.

#### Solution

Speed is given as a function of time. Therefore, we have:
v = 2t
Radius of the circle = r = 1 cm
At time = 2 s, we get :

$\text{a} = \frac{\text{v}^2}{\text{r}} = \frac{2 {}^2}{1} = 4 \text{ cm/ s}^2$

(b) Tangential acceleration

$\text{a} = \frac{\text{dv}}{\text{dt}}$

$= \frac{d}{\text{{dt}}}\left( 2t \right) = 2 \text{ cm/ s}^2$

(c) Magnitude of acceleration

$a = \sqrt{4^2 + 2^2}$

$= \sqrt{20} \text{ cm/ s}^2$

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#### APPEARS IN

Solution A Particle Moves in a Circle of Radius 1.0 Cm at a Speed Given by V = 2.0 T Where V is Cm/S and T in Seconds. Concept: Circular Motion.
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