Work done= force x distance moved
W= F x d
Work done is equal to energy transferred
One joule (measurement of energy) is defined as the work done by a force of one newton which moves an object through a distance of one metre in the direction of the force.
Gravitational potential energy = mass x g x height
GPE= m x g x h
Kinetic energy= 1/2 x mass x speed2
KE= 1/2 x m x v2
Conservation of energy produces a link between gravitational potential energy, kinetic energy and work
E.g In a pendulum-When a pendulum swings to and fro, its energy is constantly changing from gravitational potential energy to kinetic energy and back again.
This energy is gradually transferred to heat by friction with air.
Power = work done/time taken
one watt= one joule/one second
W= F x d
Work done is equal to energy transferred
One joule (measurement of energy) is defined as the work done by a force of one newton which moves an object through a distance of one metre in the direction of the force.
Gravitational potential energy = mass x g x height
GPE= m x g x h
Kinetic energy= 1/2 x mass x speed2
KE= 1/2 x m x v2
Conservation of energy produces a link between gravitational potential energy, kinetic energy and work
E.g In a pendulum-When a pendulum swings to and fro, its energy is constantly changing from gravitational potential energy to kinetic energy and back again.
This energy is gradually transferred to heat by friction with air.
Power = work done/time taken
one watt= one joule/one second