# 18 results found for physics

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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 | 8 years ago | 778 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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00:06:00

#### 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 | 5631 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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00:08:00

#### Circular motion

by Joe Wolfe
Circular motion
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1142 views
Rating:

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

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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 | 9 years ago | 689 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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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 | 968 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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00:12:00

#### Gravity

by Joe Wolfe
Gravity
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 813 views
Rating:

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

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00:01:00

#### Hardness

by John Murrell
Hardness
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 853 views
Rating:

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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 | 825 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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00:04:00

#### Longboard physics

by Jonathan Hare
Longboard physics
for 14-19 and upwards,
Lectures | 14-19 and upwards | 4 years ago | 5864 views
Rating:

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

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00:10:00

#### Momentum

by Joe Wolfe
Momentum
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 730 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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00:06:00

#### 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 | 972 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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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 | 756 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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