18 results found for physics

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centre-of-mass 00:08:00

Centre of mass

by Joe Wolfe
Centre of mass
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 810 views
Rating:

In finite objects, the total external force equals the total mass times the acceleration of a point called the centre of mass.

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Centripetal force 00:06:00

Centripetal force – how do we measure it?

by Colin Byfleet
Centripetal force – how do we measure it?
for 14-19 and upwards,
Teaching modules | 14-19 and upwards | 9 years ago | 5942 views
Rating:

A short video showing a simple classroom method of checking the way in which this force is related to mass, speed and radius.

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circular-motion 00:08:00

Circular motion

by Joe Wolfe
Circular motion
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1173 views
Rating:

Uniform circular motion: angular displacement and velocity are introduced and centripetal acceleration is determined.

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energy-and-power 00:10:00

Energy and power

by Joe Wolfe
Energy and power
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 722 views
Rating:

The total work done on an object equals the increase in its kinetic energy. For conservative forces, we can define potential energy.

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Centripetal exp 00:14:00

Going round in circles – how do we do it?

by Colin Byfleet
Going round in circles – how do we do it?
for 14-19 and upwards,
Teaching modules | 14-19 and upwards | 9 years ago | 1017 views
Rating:

A presentation showing both the ideas about centripetal force and a simple classroom method of checking the way in which this force is related to mass, speed and radius.

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gravitation 00:12:00

Gravity

by Joe Wolfe
Gravity
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 857 views
Rating:

The inverse square law explains planetary motion - and apples falling. Newton's law, measuring G, calculating orbits.

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Murrell hardness 00:01:00

Hardness

by John Murrell
Hardness
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 903 views
Rating:

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Sharman 00:29:00

Life in Space

by Helen Sharman
Life in Space
for 14-19 and upwards,
Discussions | 14-19 and upwards | 9 years ago | 868 views
Rating:

Helen Sharman, the UK's first astronaut, gives a vibrant account of her personal experience of life in space using models and film to illustrate the key scientific concepts involved in spaceflight. Among other things she discusses the way Newton's Th....

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Hare - Longboard 2 00:04:00

Longboard physics

by Jonathan Hare
Longboard physics
for 14-19 and upwards,
Lectures | 14-19 and upwards | 4 years ago | 5919 views
Rating:

A few (surprising?) thoughts on how the wheels on a longboard or skateboard actually move.

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momentum 00:10:00

Momentum

by Joe Wolfe
Momentum
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 758 views
Rating:

p=mv. If external forces are zero, momentum is conserved. In collisions, energy may be conserved (elastic) or not (inelastic).

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motion-with-constan-acceleration-kinematics 00:06:00

Motion with constant acceleration (kinematics)

by Joe Wolfe
Motion with constant acceleration (kinematics)
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1005 views
Rating:

Kinematics quantifies motion without explaining the causes of it. Here we study accelerations that are zero, positive or negative.

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newtons-laws 00:10:00

Newton’s laws of motion

by Joe Wolfe
Newton’s laws of motion
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 791 views
Rating:

F=ma (laws 1&2). Forces come in pairs that add to zero (3). Newton's laws apply in inertial frames of reference. Some common approximations made in applying them.

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