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15 Cards in this Set
- Front
- Back
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What is Netwon's First Law? |
Object in constant motion will stay in constant motion unless acted upon by an unbalanced force. Stationary is a constant motion. |
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What is Newton's Second Law? |
The larger the mass of an object, the more force is needed to accelerate it. |
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What is Newton's Third Law? |
For every action there is an equal and opposite reaction. |
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What is F = MA |
Force (Newtons) = Mass (KG) * Acceleration (m/s^2) |
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What is Friction? |
It's the force resisting the motion of 2 objects sliding against each other. |
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What is Torque? |
The tendancy of a force to rotate an object about an axis, fulcrum or pivot. How much of a force acting on an object causes it to rotate. |
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Explain |
FgN = amount of gravity acting on the car perpendicular to the slope (down on the car) FgP = amount of gravity pulling the car down the slope FNf & FNr = slope pushing on the wheels FD = drag/air resistance T = torque |
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How do you work out Traction Force? |
The normal force exerted on the tire * coefficient of friction between the tire and the road |
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What is the Aerodynamic Drag Force? |
0.5 * Drag Coeff * air density * vel^2 * frontal area of object |
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What is rolling friction? |
Force acting on all four wheels to resist rolling motion of the car |
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How do you work out engine braking? |
Engine braking coeff * ( turnover rate / 60 ) |
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What is the coefficient of restitution? |
The ratio of the speed of an object after an impact to the speed of the object before the impact (between 0 and 1) |
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How is torque applied to the wheels? |
Engine torque passes through a gearbox where the gears change the angular velocity and torque from the engine and apply it to the wheels |
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What affect does increasing torque have? |
Higher acceleration but lower max velocity |
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How do you work out wheel torque? |
Engine torque * gear factor Gear factor = gear ratio * final drive ratio |
