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Science

Science(Moments,leavers and center of gravity)

QuestionAnswer
How does a person calculate the moment of force? Moment of force = force x perpendicular distance from the fulcrum to the line of action of the force
What is a leaver? A rigid body that can turn about a fixed point called a fulcrum
Give examples of everyday examples of leavers Scissors,wheelbarrow and a door
What is the law of the leaver? This states that when a leaver is balanced the sum of the clockwise moments = the sum of the anti-clockwise moments
What is the centre of gravity in an object? A point in the object through which all the weight of the object appears to act
What is a stable equilibrium? The ball will return to the same position if given a slight push
What is an unstable equilibrium? The ball will not return to the same position if given a slight push
What is a neutral equilibrium? The ball will return to a similar position if given a slight push
What are two basic ideas to follow to improve the stability of objects? A wide base and a low centre of gravity, E.g a busen burner
Created by: Chimozukee
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