## What is the equation for weight

Weight is a measure of the force of gravity pulling down on an object.

It depends on the object’s mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth.

The formula for calculating weight is F = m × 9.8 m/s2, where F is the object’s weight in Newtons (N) and m is the object’s mass in kilograms..

## What is the formula for calculating energy efficiency

Energy efficiency is calculated by dividing the energy obtained (useful energy or energy output) by the initial energy (energy input). For example, a refrigerator has an energy efficiency of 20 to 50%, an incandescent bulb about 5%, a LED lamp over 30%, and a wind turbine 59% at most.

## How do you calculate overall efficiency

overall efficiency is = (power generated(calculated from voltage and current values) + mechanical power generated from the turbine (Pmech= torque * angular speed)) / (the total net power introduced into the system which is the heater’s power).

## How does distance affect weight

The weight W, or gravitational force, is then just the mass of an object times the gravitational acceleration. Since the gravitational constant (g) depends on the square of the distance from the center of the earth, the weight of an object decreases with altitude.

## How do you calculate work on a calculator

FormulaWork : W = Fd (work = force x distance)Force : F = W/d.Distance : d = W/F.Where, W =Work, F = Force, D = Distance.

## What is the efficiency formula

Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output (“product”) produced per the amount C (“cost”) of resources consumed.

## What is the 5 rule in physics

The 5% rule is a way of determining if the y-intercept is significant to the equation or negligible due to calculation errors. Negligible means it is insignificant or you can neglect it because it is of a small enough value. In order to determine how small is small enough to call it zero, we use the 5% rule.

## What is the force of weight

Weight is a force acting on that matter . Mass resists any change in the motion of objects. In physics, the term weight has a specific meaning – which is the force that acts on a mass due to gravity. Weight is measured in newtons.

## Is normal force equal to weight

The normal force is usually symbolized by N . In many cases the normal force is simply equal to the weight of an object, but that’s only when the normal force is the only thing counteracting the weight. … The normal force is the force that would be measured by a scale placed between the objects in contact.

## What is a power equation

P = W / t. The standard metric unit of power is the Watt. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time. Thus, a Watt is equivalent to a Joule/second.

## How do we calculate time

To solve for time use the formula for time, t = d/s which means time equals distance divided by speed.

## What is work done measured in

jouleswork done (W) is measured in joules (J) force (F) is measured in newtons (N) distance (d) is in the same direction as the force and is measured in metres (m)

## How do we calculate energy

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

## How do you calculate the work done

Calculate the work done moving the other team.work done = force × distance.work done = 1,000 N × 5 m.work done = 5,000 J (or 5 kJ)

## How do you calculate work and power

Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s). Power may be measured in a unit called the horsepower.

## What is the unit of efficiency

The efficiency is the energy output, divided by the energy input, and expressed as a percentage. A perfect process would have an efficiency of 100%. Wout = the work or energy produced by a process. Units are Joules (J).