EASY
JEE Main/Advance
IMPORTANT
Earn 100

Find the ratio of angular speeds of minute hand and hour hand of a watch and also find the angular speed of the second's hand in a watch.

Important Questions on Circular Motion

EASY
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 1>Q 3
A wheel is subjected to uniform angular acceleration about its axis. Initially its angular velocity is zero. In the first 2 seconds, it rotates through an angle θ1. In the next 2 seconds, it rotates through an additional angle θ2. find the ratio of θ2θ1 .
EASY
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 1>Q 4
If the equation for the angular displacement of a particle moving on a circular path is given by (θ) = 2t3 + 0.5, where θ is in radians and t in seconds, then find the angular velocity of the particle after 2 seconds from its start.
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 1>Q 5
The length of second’s hand in a watch is 1 cm. Find the magnitude of change in velocity of its tip in 15 seconds. Also find out the magnitude of average acceleration during this interval.
EASY
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 1>Q 6
A particle moves uniformly in a circle of radius 25 cm at two revolution per second. Find the acceleration of the particle in m s-2 .
EASY
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 1>Q 7
A car is moving with speed 30 m sec-1 on a circular path of radius 500 m. Its speed is increasing at the rate of 2 m sec-2. What is the acceleration of the car at that moment?
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 1>Q 8

A particle moves in a circle of radius 1.0 cm at a speed given by v=2.0t where v is in cm s-1 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.

EASY
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 1>Q 9
A particle is moving along a circular path of radius 5 m with a uniform speed 5 m s–1. What is the magnitude of average acceleration during the interval in which the particle completes half revolution?
HARD
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Physics>Chapter 7 - Circular Motion>Exercise - 1>Q 10
A mosquito is sitting on an L.P. record disc rotating on a turntable at 3313 revolutions per minute. The distance of the mosquito from the centre of the turntable is 10 cm. Show that the friction coefficient between the record and the mosquito is greater than π281. Take, g=10 m s-2.