EASY
JEE Main/Advance
IMPORTANT
Earn 100

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.

Important Questions on Circular Motion

MEDIUM
JEE Main/Advance
IMPORTANT
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
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
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

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
A particle is moving along a circular path of radius 5 m with a uniform speed 5 m s1. What is the magnitude of average acceleration during the interval in which the particle completes half revolution?
HARD
JEE Main/Advance
IMPORTANT
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.
MEDIUM
JEE Main/Advance
IMPORTANT
A motorcyclist wants to drive on the vertical surface of a wooden ‘well’ of radius 5 m, in a horizontal plane with the speed of 55 m s-1. Find the minimum value of the coefficient of friction between the tyres and the wall of the well. (take g= 10 m s-2)
EASY
JEE Main/Advance
IMPORTANT
A mass is kept on a horizontal frictionless surface. It is attached to a string and rotates about a fixed centre at an angular velocity ω0. If the length of the string and angular velocity is doubled, find the tension in the string which was initially T0 .