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Category Archives: How do things move without contact?
oPhysics: Projectile Motion
Explore projectile motion by changing the initial conditions and watching the resulting changes in the projectile’s motion.
Posted in How do things move without contact?, Simulations, Unit 3
Tagged oPhysics, Projectile Motion
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Three Right Hand Rules of Electromagnetism – Magnetic Force
Teaching electricity and magnetism is complicated by the challenge that the magnetic forces are perpendicular to the motion of the particles and currents. This requires a three-dimensional perspective which can introduce a variable of a “wrong” direction. To prevent errors, … Continue reading
Veritasium – Why Are Astronauts Weightless?
Posted in How do things move without contact?, Videos
Tagged Gravity, satellites, Veritasium
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How Do Satellites Get & Stay in Orbit?
SciShow Space takes you into Low Earth Orbit to explain how artificial satellites get up there and stay there — at least for a while.
Posted in How do things move without contact?, How fast can things go?, Unit 3, Videos
Tagged Gravity, satellites
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Gravitational energy vs height
Open the embedded graph to change the value of h and calculate the gravitational potential energy / kg at different heights. Can you estimate the kinetic energy needed to escape the Earth’s gravitational field?
Gravitational field strength graph
Investigate the value of g (m/s2) varying with distance (km) from the centre of the Earth.
PhET – Gravity force lab
Visualize the gravitational force that two objects exert on each other. Adjust properties of the objects to see how changing the properties affects the gravitational attraction. (Choose the fullscreen option down the bottom right hand corner.) https://phet.colorado.edu/en/simulation/gravity-force-lab
PhET – Gravity And Orbits
Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it! (Choose … Continue reading
What Is Gravity?
People have a lot of different ideas about what gravity is: a downward force that stops you from flying off into space, an attraction smaller objects experience towards larger objects, or a mutual attraction between all masses. It is the … Continue reading
Posted in How do things move without contact?, Unit 3, Videos
Tagged Gravity, Veritasium
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