Embibe Experts Solutions for Exercise 6: EXERCISE

The acceleration of a particle performing uniform circular motion on a circular path of radius $2 \mathrm{m}$ and completing $120$ revolutions per minute is

Two particles of equal masses are revolving in circular paths of radii $r_1$ and $r_2$, respectively, with the same speed. The ratio of their centripetal forces is,

Ratio of angular velocity of hour hand of a watch over the angular velocity of spin of earth about its own axis is

Centripetal acceleration of a particle revolving on a circular path of radius $R$ is $A.$ Its angular speed will be

A car is moving on a circular road of radius $r=150 \mathrm{m}$ and its speed is increasing at a rate $8 \mathrm{m} {\mathrm{s}}^{-2}.$ At some instant its speed is $30 \mathrm{m} {\mathrm{s}}^{-1},$ net acceleration of the car at this instant is

When a particle moves at constant speed $v$ in a circle (or a circular arc) of radius $r,$ the acceleration of the particle is directed (i)_____ the centre of the circle and has a constant magnitude (ii)_____.

(i) towards / away from
(ii) $v^{2}r/\frac{v^2}{r}.$

An object moves in a circular path with a constant speed in the xy plane. With the centre at the origin. When the object is at $x=-2 \mathrm{m},$ its velocity is $-(4 \mathrm{m}/\mathrm{s})\hat{j}.$ Then objects velocity at $y=2 \mathrm{m}$ is

An object moves in a circular path with a constant speed in the xy plane. With the centre of origin. When its velocity is $-\left(4m/s\right)\hat{j}$ .find objects acceleration when it is at $y=2 \mathrm{m}$