Pull the Lever, Kronk!
This formula — Effort Force × Effort Arm = Resistance Force × Resistance Arm — helps determine distances and forces on this type of lever when it’s in static equilibrium.
What is a first-class lever?
While gear ratio formulas for teeth count and speed both divide input by output, this quantity reverses the relationship, multiplying input by the gear ratio to find the output.
What is torque?
In a series circuit, you find the total resistance by doing this with the resistance values of all components.
What is add them together?
Rachel runs 4 miles south from her starting point, then turns around and runs 6 miles north. Her final displacement, including direction, is this.
What is 2 miles north?
One type of material allows electrical current to pass through it with ease, while the other effectively blocks its flow.
What are conductors and insulators?
Though it's technically a wheel and axle, moving this part of your car functions like a first-class lever.
What is a steering wheel?
To find this value in this kind of gear train, you multiply the individual gear ratios of each stage instead of adding them.
What is a compound gear train?
One is the "push" or potential difference that drives electrons, while the other is the "flow" or rate of charge movement through a circuit.
What are voltage and current?
To determine average velocity, you'll need to know both the duration of the movement and this specific vector measurement of an object's overall change in position.
Displacement and Time
This versatile instrument is used to measure the properties of an electrical circuit, including voltage, current, and resistance.
What is a multimeter?
If a wheelbarrow has a 5-foot handle and the load is placed 2 feet from the wheel (the fulcrum), this is the Ideal Mechanical Advantage it provides.
What is 2.5?
To calculate gear ratio, you can use any of these four types of information:
the number of teeth, rotational speed, torque, or diameter
This fundamental principle states that the current flowing through a resistor is directly proportional to the applied voltage and inversely proportional to the resistor's value.
What is Ohm's Law?
When you know a projectile's horizontal range (R), its launch angle (θ), and the acceleration due to gravity (g), this square-root equation is used to calculate its initial velocity (v0).
v0=sin(2θ)R⋅g
This mechanism transmits rotary motion and torque through the precise engagement of its interlocking teeth.
What is a gear train?
In a block and tackle system with 5 supporting rope segments, this is the Ideal Mechanical Advantage — assuming no friction.
What is 5?
Kirchhoffs Voltage Law states: The sum of all voltage drops....
in a series circuit equals the total applied voltage.
In a simple circuit powered by a 12-Volt battery, if 0.5 Amperes of current flows through a light bulb, this is the bulb's resistance in Ohms.
24 Ohms
Electrical POWER is measured in these units?
Watt are watts?
Often seen on bicycles, this pair of components works together: one is a toothed wheel, and the other is a series of interconnected links, both designed to transmit rotational motion and power.
What is a sprocket and chain?
To calculate the mechanical advantage of using a wrench on a bolt, use this equation:
What is MA = Radius of Wheel ÷ Radius of Axle?
A series circuit has a 12-volt power supply and a lamp with 393 ohms of resistance. Using Ohm’s Law, this is the number of milliamps of current flowing through the circuit.
What is 30.53 milliamps?
To find a missing resistance in a three-branch parallel circuit, when given the total current and the values of the other two resistors, one must first determine this consistent circuit value that is identical across all parallel branches.
What is voltage?
Excluding air resistance: A ping pong ball is launched and travels 15 feet at 30 feet per second. What is the rate acceleration due to gravity?
What is 32.15 ft/sec2?
This system, combining both fixed and movable pulleys, provides mechanical advantage and a change in direction for an applied effort force.
What is a block and tackle?