Weight and contact forces
Carefully distinguish mass and weight. Hooke's law quantifies deformation. Contact forces have normal and frictional components.
More details | Watch nowThe Hunt for the Higgs
Particle physicist Brian Cox explains how quantum mechanics has changed the way that we think the world works and why it predicts the existence of a particle that has never been seen. The Higgs boson is a mysterious particle that explains why things ....
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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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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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In simple harmonic motion, displacement, velocity and acceleration vary sinusoidally with time, but with different phases.
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Uniform circular motion: angular displacement and velocity are introduced and centripetal acceleration is determined.
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Motion with uniform acceleration, such as in a uniform gravitational (or electric) field is projectile motion, analysed here with examples.
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Kinematics quantifies motion without explaining the causes of it. Here we study accelerations that are zero, positive or negative.
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A discourse about Harry's loves in science, the experiments leading up to the C-60 discovery in 1985 and the host of developments in putting C-60 and nanotubes to good use. Harry's ideas about public perception of science. Good reasons for being a s....
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A look at what was known when Newton started to develop his theory of gravitation and how he used these ideas and data to make his great forward step
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A description and demonstration of the way in which craters formed by dropping objects into sand can be linked to some elementary physics
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