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

  • information governance

    Information governance is a holistic approach to managing corporate information by implementing processes, roles, controls and ...

  • enterprise document management (EDM)

    Enterprise document management (EDM) is a strategy for overseeing an organization's paper and electronic documents so they can be...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • PKI (public key infrastructure)

    PKI (public key infrastructure) is the underlying framework that enables entities -- users and servers -- to securely exchange ...

  • obfuscation

    Obfuscation means to make something difficult to understand.

  • dumpster diving

    Dumpster diving is looking for treasure in someone else's trash.

SearchHealthIT

SearchDisasterRecovery

  • risk mitigation

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

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

SearchStorage

  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, ...

  • cloud testing

    Cloud testing is the process of using the cloud computing resources of a third-party service provider to test software ...

  • storage virtualization

    Storage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage ...

Close