12.10.2017 Flashcards
(28 cards)
Force (N) = ?
Mass (Kg) x Acceleration 9.81 m/s squared
Work (J) = ?
Force (N) x Distance (m)
Weight is an amount of..?
Force (N)
A Lever is ..?
A simple machine that allows us to exert a small Force and apply a larger Force to an object (Mass)
Three classes of Levers are..?
Effort
Load
Fulcrum
Effort is..?
The input Force applied by us in either a downward or upward direction. ( pushing or pulling )
Load is..?
The output Force or amount of Force being exerted an object to be moved.
Fulcrum is..?
The pivot point
In a diagram, Fulcrum is shown as a ..?
Filled in Triangle
In a diagram, Load is shown as ..?
A filled in square
In a diagram, Effort is shown as..?
Arrows pointing
In a diagram, Motion is shown as ..?
Filled in arrows pointing.
In a diagram, Load Bearing or Effort Line, is shown as..?
A straight horizontal line.
An example of a Class 1 Lever is ..?
A crowbar or sacktruck
An example of a Class 2 Lever is..?
A wheelbarrow
An example of a Class 3 Lever is..?
A mechanical digger
Effort = ?
Load x Load to Fulcrum Distance/ Effort to Fulcrum Distance
The 3 components to a Lever are ..?
Effort
Fulcrum
Load
What is a Gear?
Gears are wheels with teeth. The teeth fit snugly in another gear’s teeth.
4 uses of Gears?
To slow things down
To speed things up
To change direction
To control several things at once
3 forms of Force are..?
Physical
Environmental
Gravity
What is being done when a Force is applied to an object, (Mass), and causes it to move?
Work
A unit of work done is measured in ..?
Joules (J)
The relationship between Force and Distance is..?
Work or Work Done
