Embibe Experts Solutions for Chapter: Circular Motion, Exercise 3: Exercise (Conceptual Questions)

An insect trapped in a circular groove of radius $12 \mathrm{cm}$ moves along the groove steadily and completes $7$ revolutions in $100$ seconds. The linear speed of the insect is _______

A particle moves in a circle of radius $25 \mathrm{cm}$ at two revolutions per second. The acceleration of the particle in $\mathrm{m} {\mathrm{s}}^{-2}$ is

A sphere of mass $m$ is tied to end of a string of length $l$ and rotated through the other end along a horizontal circular path with speed $v$. The work done in full horizontal circle is

A body of mass $1 \mathrm{kg}$ is tied to one end of a string and is revolved in a horizontal circle of radius $0.1 \mathrm{m}$ with a speed of $3 \mathrm{revolution} {\mathrm{s}}^{-1}$. Assuming that the effect of gravity is negligible, then linear velocity, acceleration and tension in the string will be,

The angular velocity of a wheel is $70 \mathrm{rad} {\mathrm{s}}^{-1}.$ If the radius of the wheel is $0.5 \mathrm{m},$ then linear velocity of the wheel is

A $500 \mathrm{kg}$ car takes a round turn of radius $50 \mathrm{m}$ with a velocity of $36 \mathrm{km} {\mathrm{hr}}^{-1}$. The centripetal force is

A car moving on a horizontal road may be thrown out of the road in taking a turn

A body crosses the topmost point of a vertical circle with critical speed. Its centripetal acceleration, when the string is horizontal will be