English
Karnataka Board PUCPUC Science Class 11

Read the statement below carefully and state, with reason, if it is true or false: The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point.

Advertisements
Advertisements

Question

Read the statement below carefully and state, with reason, if it is true or false:

The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point.

Options

  • True

  • False

MCQ
True or False
Advertisements

Solution

This statement is True.

Explanation:

At a point on a circular path, a particle appears to move tangentially to the path. Hence, the velocity vector of the particle is always along the tangent at a point.

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Motion in a Plane - EXERCISE [Page 48]

APPEARS IN

NCERT Physics [English] Class 11
Chapter 3 Motion in a Plane
EXERCISE | Q 3.16 (b) | Page 48

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Explain the meaning of uniform circular motion. Give one example of such motion.


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


Differentiate between uniform linear motion and uniform circular motion.


A piece of stone tied at the end of a thread is whirled in a horizontal circle with uniform speed by hand. Answer the following questions:

  1. Is the velocity of stone uniform or variable?
  2. Is the acceleration of stone uniform or variable?
  3. What is the direction of acceleration of stone at any instant?
  4. Which force provides the centripetal force required for circular motion?
  5. Name the force and its direction which acts on the hand.

Define angular velocity.


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 the angular speed of minute hand and hour hand of a watch is ____________.


A particle performs uniform circular motion in a horizontal plane. The radius of the circle is 8 cm. The centripetal force acting on the particle is 15 N. Its kinetic energy is ____________.


Certain neutron stars are believed to be rotating at about 1 rev/s. If such a star has a radius of 1.6 km, the acceleration of an object on the equator of the star will be nearly ____________.


Consider a simple pendulum of length 4 m. Its bob performs a circular motion in horizontal plane with its string making an angle 60° with the vertical. The Period of rotation of the bob is ____________.(Take g = 10 m/s2)


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 body moving along a circular path of radius R with velocity v, has centripetal acceleration a. If its velocity is made equal to 2v. What will be the centripetal acceleration?


If a body is moving in a circle of radius r with a constant speed v, its angular velocity is ______.


A particle moves along a circle of radius r with constant tangential acceleration. If the velocity of the particle is v at the end of second revolution, after the revolution has started, then the tangential acceleration is ______.


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 horizontal circular platform of mass M is rotating at angular velocity ω about a vertical axis passing through its centre. A boy of mass m is standing at the edge of the platform. If the boy comes to the centre of the platform, then the new angular velocity becomes ______.


Two bodies of masses 10 kg and 5 kg moving in concentric orbits of radii R and r such that their periods are the same. Then the ratio between their centripetal accelerations is ______.


A body of mass m is moving in circle of radius r with a constant speed v. The work done by the centripetal force in moving the body over half the circumference of the circle is ______.


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?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×