Does the insect exert a torque on the disk is the angular momentum conserved?
Table of Contents
- 1 Does the insect exert a torque on the disk is the angular momentum conserved?
- 2 What is required to change the angular momentum of a system?
- 3 What will happen to the angular velocity of the disk ring system after the ring is dropped onto the spinning disk?
- 4 Which of the following conditions will ensure that angular momentum is conserved?
- 5 Does angular velocity affect rotational inertia?
Does the insect exert a torque on the disk is the angular momentum conserved?
No external torques about the center are exerted on the bug-DVD system (’cause no net force at all acts). Thus, angular momentum is conserved.
What is required to change the angular momentum of a system?
People mistakenly think any external force acting on a system will change angular momentum. Angular momentum is changed by a net external torque, but not all forces cause a torque. To produce a torque τ, a force F must have a lever arm r and a component perpendicular to the lever arm.
What will happen to the angular velocity of the disk ring system after the ring is dropped onto the spinning disk?
When the ring is dropped onto the rotating disk, there is no net torque on the system since the torque on the ring is equal and opposite to the torque on the disk. Therefore, there is no change in angular momentum. Angular momentum is conserved .
How do you find angular velocity from angular momentum?
The final angular velocity can be calculated from the definition of angular momentum, L = Iω.
What happens to angular momentum when an angular impulse acts on a system?
Angular momentum is a vector that is parallel to the angular velocity. If there is no net torque acting on a system, the system’s angular momentum is conserved. A net torque produces a change in angular momentum that is equal to the torque multiplied by the time interval over which the torque is applied.
Which of the following conditions will ensure that angular momentum is conserved?
Just as linear momentum is conserved when there is no net external forces, angular momentum is constant or conserved when the net torque is zero.
Does angular velocity affect rotational inertia?
While in the pike position the body decreases in radius as each segment moves closer to the axis of rotation, resulting in angular velocity increasing and a decrease of moment of inertia. Thus, during a dive, angular momentum is constant meaning that moment of inertia is inversely proportional to angular velocity.