20 results found for physics

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00:04:00

Longboard physics

by Jonathan Hare
Longboard physics
for 14-19 and upwards,
Lectures | 14-19 and upwards | 7 years ago | 6303 views
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A few (surprising?) thoughts on how the wheels on a longboard or skateboard actually move.

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00:07:00

The Longboard – speedometer

by Jonathan Hare
The Longboard – speedometer
for 14-19 and upwards,
Lectures | 14-19 and upwards | 7 years ago | 1488 views
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Jonathan describes his adventures with a longboard and some different methods of making a speedometer for it.

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00:09:00

Oscillations

by Joe Wolfe
Oscillations
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1004 views
Rating:

Inertia and restoring forces can, with low friction or damping, lead to oscillations and resonance. We analyse the mechanics of vibrations.

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00:12:00

Gravity

by Joe Wolfe
Gravity
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1183 views
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The inverse square law explains planetary motion - and apples falling. Newton's law, measuring G, calculating orbits.

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00:10:00

Rotation

by Joe Wolfe
Rotation
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1033 views
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Torques produce angular acceleration, moment of inertia 'resists' it. Rotational kinetic energy and angular momentum.

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00:10:00

Momentum

by Joe Wolfe
Momentum
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1048 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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00:08:00

Centre of mass

by Joe Wolfe
Centre of mass
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1154 views
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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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00:10:00

Energy and power

by Joe Wolfe
Energy and power
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1006 views
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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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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 | 11 years ago | 7684 views
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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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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 | 11 years ago | 1328 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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00:10:00

Weight and contact forces

by Joe Wolfe
Weight and contact forces
for 14-19 and upwards,
Lectures | 14-19 and upwards | 12 years ago | 1327 views
Rating:

Carefully distinguish mass and weight. Hooke's law quantifies deformation. Contact forces have normal and frictional components.

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00:01:00

Hardness

by John Murrell
Hardness
for 14-19 and upwards,
Lectures | 14-19 and upwards | 12 years ago | 1671 views
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