Demonstration: A brief introduction to measuring mass by balancing.
Demonstration: A balance which introduces the principle of reading masses against a scale.
Class practical: Students can make an amazing instrument which is able to measure the mass of a hair or a grain of sand.
Demonstration: Measurement of regular time intervals.
The verb to weigh and the noun weight are used in conflicting ways, even in science. You cannot hope to clear up the great...
To many students, the image of science is one of exactness and perfection. And yet, good scientists make rough estimates again...
Here you've learnt about gravity as a force, linking it to experiencing weight and weightlessness. Knowing about the forces...
There isn't a place on the face of the Earth where there is no gravity acting. This means that every object we ever come...
Once again, here is a distinction made in the sciences that everyday conversations don't bother with. Statements such as: The...
Once you have identified the forces, set the mass, then you can find the acceleration: acceleration = force mass .
The wobbler is self-righting because its centre of mass is very low. As the wobbler leans over, its centre of mass rises but...
For something to balance, its centre of mass has to be above its point of support. Water can flow which means that as the can...
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