English

Define angular velocity. - Physics

Advertisements
Advertisements

Question

Define angular velocity.

Definition
Advertisements

Solution

Angular velocity of a particle is the rate of change of angular displacement.

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Motion in a Plane - Exercises [Page 45]

APPEARS IN

Balbharati Physics [English] Standard 11 Maharashtra State Board
Chapter 3 Motion in a Plane
Exercises | Q 2. (x) | Page 45

RELATED QUESTIONS

For a particle performing uniform circular motion `vecv=vecomegaxxvecr`obtain an expression for linear acceleration of the particle performing non-uniform circular motion.


A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the net acceleration of the cyclist on the circular turn?


How does uniform circular motion differ from uniform linear motion?


Give an example of motion in which speed remains uniform, but the velocity changes.


A uniform circular motion is an accelerated motion. Explain it. State whether the acceleration is uniform or variable? Name the force responsible to cause this acceleration. What is the direction of force at any instant? Draw a diagram in support of your answer.


Which of the following quantity remains constant in uniform circular motion:


Complete a sentence and explain it.

When an object is in uniform circular motion, its ______ changes at every point.


Solve the following problem.

A car moves in a circle at a constant speed of 50 m/s and completes one revolution in 40 s. Determine the magnitude of the acceleration of the car.


What is meant by uniform circular motion? Give two examples of uniform circular motion.


A uniform rod of length '6L' and mass '8 m' is pivoted at its centre 'C'. Two masses 'm' and ' 2m' with speed 2v, v as shown strikes the rod and stick to the rod. Initially the rod is at rest. Due to impact, if it rotates with angular velocity 'w1' then 'w' will be ________.


The ratio of angular speed of a hour-hand to the second-hand of a watch is ____________.


A small sphere is attached to a cord and rotates in a vertical circle about a point O. If the average speed of the sphere is increased, the cord is most likely to break at the orientation when the mass is at ____________.


A body of mass ·m' is moving along a circle of radius 'r' with linear speed 'v'. Now, to change the linear speed to `V/2` and to move it along the circle of radius '4r', required change in the centripetal force of the body is ______.


A particle is perfonning uniform circular motion. If 'θ', 'ω', 'α' and ' a' are its angular displacement, angular velocity, angular acceleration, and centripetal acceleration respectively, then which of the following is 'WRONG'?


A string of length 'l' fixed at one end carries a mass 'm' at the other end. The string makes `3/pi` revolutions/second around the vertical axis through the fixed end as shown in figure. The tension 'T' in the string is ______.


The angular speed of the minute hand of a clock in degrees per second is ______.


A cyclist is riding with a speed of 43.2 km/h. As he approaches a circular turn on the road of radius 60 m, he applies brakes and reduces his speed at constant rate of 1.8 ms-2. The magnitude of the net acceleration of the cyclist is ______.


A body moves in a uniform circular motion ______.


Which of the following is correct about uniform circular motion

  1. the direction of motion is continuously changed
  2. the direction of motion is not changed
  3. speed and direction both remain constant
  4. speed is constant but the direction is changing

Earth can be thought of as a sphere of radius 6400 km. Any object (or a person) is performing circular motion around the axis of earth due to earth’s rotation (period 1 day). What is acceleration of object on the surface of the earth (at equator) towards its centre? what is it at latitude θ? How does these accelerations compare with g = 9.8 m/s2?


A particle is performing a uniform circular motion along a circle of radius R. In half the period of revolution, its displacement and distance covered are respectively.


A thin uniform circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular to its plane with an angular velocity ω. Another disc of same dimensions, but of mass `1/4`M is placed gently on the first disc co-axially. The. angular velocity of the system is ______.


Why is uniform circular motion said to be accelerated?


In uniform circular motion, although the speed is constant, why does acceleration occur?


In uniform circular motion, although the speed is constant, why does acceleration occur?


By applying Kepler's third law to the formula for centripetal force, Newton concluded that the force acting on a planet is:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×