machines
Which machine was made in a response to the limitation of the movement of a lever?
What is Wheel and Axle
What class are a crowbar and pliers in?
What is first class lever
What word best describes a point when a lever turns or pivots?
what is fulcrum
What is the messure of mechanical advantage for an ideal machine (100% efficient with no friction), and is the ratio of the input distance to the output distance?
what is IMA = d in/d out
What type of pulley system has the highest mechanical advantage?
What is a Block and Tackle pulley?
Which simple machine is considered a common variation from the Wheel and Axle machine?
What is the Gear
What class is a brake pedal and a bottle opener in?
What is second class lever
What is the energy transferred to an object when an external force acts on the object to move it?
what is Work
efficiency = (w out/W in)
what is the formula for effiency?
When did men recognize the need for machines?
What is after the Fall?
What simple machine consists of a flat surface with opposite ends at different heights?
What is Inclined Plane
What class would your arms or salad tongs belong to?
What is third class levers
The rate of doing work
what is Power
AMA = F out/F in
What is the formula for Actual Machanical Advantage (AMA)
What is the SI unit for power?
What is the watt?
What is a simple machine that consists of a wheel and axle system with a groove around the perimeter of the wheel in which a rope, cable, or belt moves with the wheel as it rotates?
What is a Pulley system
What is a lever?
What is a simple machine that consists of a rigid bar that turns around a pivot point?
what is the process or effect of a machine converting energy from one form to another?
what is efficiency
W=Fd
What is the formula for work
Why is a skateboarder standing on a skateboard not doing any work?
What is because his force is perpendicular to the distance traveled?
What machine consists of two inclined planes that are connected with an acute angle and is thick on one side and thin on the other?
What is a wedge?
which lever class is used most in our daily lives?
What is third lever class?
What force tries to cause an object to rotate around its axis?
What is torque
P= W/t
What is the formula for power
If you increase the steepness of the thread of a screw, are you increasing or decreasing the medicinal advantage?
What is decrease the mechanical advantage?