SATS How To...
Welcome to the all new SATS How-to page. Here we will teach you valuble techniques that can be applied in your Maths, English & Science SATS exams, whatever the level. Forgotten how to convert a fraction? Unsure about how to plan an essay? Then the SATS How-to is for you!
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| how to understand balanced and unbalanced forces |
Balanced Forces
If an object is still the forces are balanced.
An upthrust takes place when an object displaces air or a liquid. It is a type of reaction force.
if an object floats on water the forces are balanced.
The weight of the boat is balanced by the upthrust of the water.
If an object such as a cup stands on a table the forces are balanced.
The weight of the cup is balanced by a reaction force from the table.
You can see balanced forces easily in a tug-of-war when the ribbon is not moving.
Unbalanced forces
If an object starts to move, speeds up, slows down, stops or changes direction, the forces are unbalanced.
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