Embibe Experts Solutions for Chapter: Circular Motion, Exercise 1: Exercise 1

If a particle moves in a curved path, it must have a component of acceleration

The angular velocity of a ceiling fan reduces to $50\%$ after $36$ rotations since it is switched off. Assuming uniform retardation, the number of rotations it further makes before coming to rest is $\underline{ }$

If a point charge $q$ is moving in a circle of radius $r$ with speed $v,$ then time period $T$ of the point charge will be

A simple pendulum is oscillating without damping. When the displacement of the bob is less than maximum, its acceleration vector $\overrightarrow{a},$ is correctly shown in which of the following figure ?

A car is moving in a circular path of radius $450 \mathrm{m}$ with a speed of $30 \mathrm{m} {\mathrm{s}}^{-1}$. If the speed of the car is increased at a rate of $2 \mathrm{m} {\mathrm{s}}^{-2}$, the resultant acceleration will be,

A particle of mass $m$ is suspended from a ceiling through a string of length $L$. The particle moves in a horizontal circle of radius $r$ such that $r=\frac{L}{\sqrt{2}}$. The speed of particle will be :

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

A car moves at a speed of $36 {\mathrm{kmh}}^{-1}$ on a level road. The coefficient of friction between the car tyres and the road is $0.8$. The car negotiates a curve of radius $R$. If $g=10{ \mathrm{ms}}^{-2}$, the car will skid (or slip) while negotiating the curve, if the value of $R$ is