Definitions
What's the definition of torque?
Any force that tries to cause an object to rotate around its axis.
What is W=Fd the formula for?
Work.
What's the definition of a simple machine?
Basic mechanical devices that change the magnitude, direction, or distance traveled of the force used when doing work.
What machine class is a wheel barrow in?
Second.
What type of machine is a bicycle?
Compound.
What's the definition of work?
The energy transferred to an object when an external force acts on the object to move it (scaler).
What is P=W/t the formula for?
Power.
Which simple machine pivots on a fulcrum?
Lever.
What machine class is your arm in?
Third.
What is the formula IMA=T(in)/T(out) for?
Teeth.
What's the definition of power?
The rate of doing work.
What is IMA=d(in)/d(out) the formula for?
Ideal mechanical advantage.
Which simple machine's common variations are a gear and a pulley?
Wheel and axle.
What machine class is a hammer in?
First.
How is work wasted?
All the machines have internal friction.
What's the definition of mechanical advantage?
The measure of the change in input needed to do a certain amount of work (output), when using a simple machine.
What is AMA=F(out)/F(in) the formula for?
Which simple machine is a wheel and axle system with a groove around the perimeter of the wheel, in which a rope/cable/belt moves with the machine as it rotates?
Pulley.
What machine class are tweezers in?
Third.
Which Scottish inventor is the SI unit of power named after?
John Watt.
What's the definition of fulcrum?
The point about which a lever turns or pivots.
What is E=AMA/IMA(100%) the formula for?
Efficiency.
Which simple machine consists of a flat surface whose opposite ends are at different heights?
Inclined plane.
What machine class is a crowbar in?
First.
The aerodynamic shape of sports cars and the V-shaped bow of a ship are examples of which simple machine?
Wedges (inclined planes).