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A particle is moving in a straight line with a constant velocity. What is its an

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Question: A particle is moving in a straight line with a constant velocity. What is its angular momentum about a point that is not on the line of motion?

Options:

  1. Zero
  2. Constant
  3. Increasing
  4. Decreasing

Correct Answer: Constant

Solution: 

The angular momentum is constant because the particle\'s velocity and distance from the point are constant.

A particle is moving in a straight line with a constant velocity. What is its an

Practice Questions

Q1
A particle is moving in a straight line with a constant velocity. What is its angular momentum about a point that is not on the line of motion?
  1. Zero
  2. Constant
  3. Increasing
  4. Decreasing

Questions & Step-by-Step Solutions

A particle is moving in a straight line with a constant velocity. What is its angular momentum about a point that is not on the line of motion?
  • Step 1: Understand that angular momentum depends on the velocity of the particle and its distance from the point of interest.
  • Step 2: Recognize that the particle is moving in a straight line with a constant velocity.
  • Step 3: Identify the point that is not on the line of motion of the particle.
  • Step 4: Calculate the distance from the point to the line of motion of the particle. This distance remains constant.
  • Step 5: Since both the velocity of the particle and the distance from the point are constant, the angular momentum will also remain constant.
  • Step 6: Conclude that the angular momentum about the point is constant.
  • Angular Momentum – Angular momentum is the product of the linear momentum and the perpendicular distance from the point of rotation to the line of motion.
  • Constant Velocity – A particle moving with constant velocity means its speed and direction do not change over time.
  • Point of Reference – The point about which angular momentum is calculated can affect the value of angular momentum, especially if it is not on the line of motion.
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