Browse Definitions :
Definition

conservation of angular momentum

Conservation of angular momentum is a physical property of a spinning system such that its spin remains constant unless it is acted upon by an external torque; put another way, the speed of rotation is constant as long as net torque is zero.

Angular momentum, also known as spin, is the velocity of rotation of something around an axis. Gyroscopes are simple devices that exploit the conservation of angular momentum to stabilize, guide or measure rotational movement in many types of systems. The law of conservation of angular momentum explains why a toy gyroscope or a spinning top remains upright as it turns rather than submitting to the force of gravity and toppling over.

Wheels on a bicycle act like gyroscopes as they spin up to speed, making it easier for the bicycle to stay upright and making it harder for anything to upset its momentum. The ability of a figure skater to increase his spin by pulling his arms closer to his body is another example of the conservation of angular momentum at work, as is the increase of an orbiting planet's spin as it gets closer to the sun.

Conservation of angular momentum is one of four exact conservation laws in physics, which state that a specified property of a given physical system remains constant even as that system evolves over time. The three other exact conservation laws are conservation of linear momentum, conservation of energy and conservation of electric charge.

Khan Academy provides a tutorial on the conservation of angular momentum:

This was last updated in March 2016

Continue Reading About conservation of angular momentum

SearchCompliance
  • OPSEC (operations security)

    OPSEC (operations security) is a security and risk management process and strategy that classifies information, then determines ...

  • smart contract

    A smart contract is a decentralized application that executes business logic in response to events.

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

SearchSecurity
  • email virus

    An email virus consists of malicious code distributed in email messages to infect one or more devices.

  • key fob

    A key fob is a small, programmable device that provides access to a physical object.

  • identity theft

    Identity theft, also known as identity fraud, is a crime in which an imposter obtains key pieces of personally identifiable ...

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • change control

    Change control is a systematic approach to managing all changes made to a product or system.

  • disaster recovery (DR)

    Disaster recovery (DR) is an organization's ability to respond to and recover from an event that affects business operations.

SearchStorage
  • JBOD (just a bunch of disks)

    JBOD, which stands for 'just a bunch of disks,' is a type of multilevel configuration for disks.

  • bare-metal restore

    A bare-metal restore (also referred to as bare-metal recovery or bare-metal backup) is a data recovery and restoration process ...

  • mSATA SSD (mSATA solid-state drive)

    An mSATA SSD is a solid-state drive (SSD) that conforms to the mSATA interface specification developed by the Serial ATA (SATA) ...

Close