Physics

"the total angular momentum of an object changes when a net external force acts on the system." This statement is:
a)always true
b) never true
c) sometime true, it depends on the force's direction
d)sometime true, it depends on the force's point of application

I can cancel out b). I think the correct answer is a) it doesn't depend on the force's direction or point of application does it?

  1. 👍
  2. 👎
  3. 👁
  1. If the force is acting in such a direction in which the center of mass is along the force vector, the object can be accelerated, but its angular momentum will not change.

    Think on c).

    1. 👍
    2. 👎
    👤
    bobpursley

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    true or false If a net force acts on an object, the object's speed will change. An object's velocity will change if a net force acts on the object. If two object have the same acceleration, they are under the influence of equal

  2. Physics

    Three forces act on an object. A 4 N force acts due east and a 3 N force acts due north. If the net force on the object is zero, what is the magnitude of the third force?

  3. Physics

    1. Some students conduct an experiment to prove conservation of momentum. They use two objects that collide. Measurements are taken before and after the collision. Which quantities should be measured before and after the

  4. Physics

    Need serious help!! 1. How can the momentum of a moving object be found? A. By multiplying its mass by its acceleration. B. By dividing its change in distance trabeled by the time it travels. C. By dividing its velocity bu the

  1. Physics

    A crate is pulled right with a force of 82.0N to the left wtih a force of 115N upward with a force of 565N and downward with a force of 236N Fine the net external force in the X direction Find the net external force in the y

  2. Science

    FORCES THAT CHANGE MOTION QUICK CHECK 1.What is a newton? ANSWER: The unit in which force is measured 2.A tennis player swings and hits the ball away. How does the force of the tennis racket affect the motion of the ball? ANSWER:

  3. Physics

    1. Which of these quantities is a vector? A. Time B. Momentum C. Distance D. Speed 2. What is the representation of the momentum vector? A. An arrow B. A dot C. A straight line D. A number 3. What is the formula for the momentum

  4. Physics help!!

    A crate is pulled to the right with a force of 80 N, to the left with a force of 125.8 N, upward with a force of 615.4 N, and downward with a force of 248 N. Net external force in the x direction: -45.8 Net external force in the y

  1. Physics "Momentum of impact"

    1. Which mathematical representation correctly identifies impulse? A. implulse= force/time B. impulse= force * time C. impulse= acceleration * time D. impulse= velocity/time 2. In a closed system, a ball with a mass of 3 kg and a

  2. Physics (Conservation of momentum)

    1. Which of Newton’s laws of motion states that an object at rest stays at rest and an object in motion stays in motion with the same speed and the same direction unless acted upon by an unbalanced force? A. Newton's Third Law

  3. physics

    Which of the following statements about work is or are true? (More than one statement may be true.) A. Negative net work done on an object always reduces the object's kinetic energy. B. If the work done on an object by a force is

  4. Physics (The moment of Impact)

    1. Which mathematical representation correctly identifies impulse? A. implulse= force/time B. impulse= force * time C. impulse= acceleration * time D. impulse= velocity/time 2. In a closed system, a ball with a mass of 3 kg and a

You can view more similar questions or ask a new question.