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moments levers and c
moments levers and centres of gravity
Question | Answer |
---|---|
what is the moment of a force | force multiplied by distance of force from fulcrum |
what is a lever | a rigid body free to move about a fixed point called a fulcrum |
state the law of the lever | when a lever is balanced clockwise moments equal anticlockwise moments |
Another word for fulcrum is | axis |
force is measured in | newtons |
examples of levers include | scissors, wheelbarrows and doors |
an object in physics is commonly called | a body |
what is the centre of gravity of an object | the point on an object through which all the weight of the object appears to act |
a thin piece of card is called a | lamina |
when an object is balanced we say it is in | equilibrium |
to increase the stability of an object | widen the base and lower the centre of gravity |