Which type of simple machine is a seesaw?
A seesaw is a type of lever, with the fulcrum in the center and the effort applied at one end to lift the load at the other end.
If Gear A has 20 teeth and Gear B has 40 teeth, how many rotations will Gear A make when Gear B makes one rotation?
Gear A will make two rotations for every one rotation of Gear B because Gear A has half as many teeth as Gear B.
Which of the following describes the mechanical advantage of an inclined plane?
The mechanical advantage of an inclined plane is calculated by dividing the length of the slope by its height.
Which principle explains why a hydraulic press can lift a heavy object with a small force?
Pascal's Principle states that pressure applied to a confined fluid is transmitted equally in all directions, allowing a small force to lift a heavy object in a hydraulic press.
What happens to the effort force required to lift a load if the length of the lever arm is increased?
Increasing the length of the lever arm reduces the effort force needed to lift a load, as it provides greater mechanical advantage.
In a wheel and axle system, what happens to the force applied if the radius of the wheel is larger than the radius of the axle?
In a wheel and axle system, the larger the radius of the wheel compared to the axle, the greater the mechanical advantage, multiplying the applied force.
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Which of the following describes the function of a pulley system?
A pulley system changes the direction of the applied force and, depending on the configuration, can also reduce the amount of effort required to lift a load by providing mechanical advantage.