#### Physics equation for work

## What is work done in physics?

In summary, work is done when a force acts upon an object to cause a displacement. Three quantities must be known in order to calculate the amount of work. Those three quantities are force, displacement and the angle between the force and the displacement.

## What are the formulas for work and power?

That equation is:Work = Force • Displacement • Cosine(theta)W = F • d • cos(theta)Power = Work / time.P = W / t.P = F • cos(theta) • (d/t)P = F • v • cos(theta)PE_{grav} = m•g•h.KE = 0.5 • m • v^{2}

## How do you calculate work done by weight?

Work = Mass * Gravity * Height and is measured in Joules. Imagine you find a 2 -Kg book on the floor and lift it 0.75 meters and put it on a table. Remember, that “force” is simply a push or a pull. If you lift 100 kg of mass 1-meter, you will have done 980 Joules of work.

## What is Ke formula?

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v^{2}. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

## What is no work is done?

If there is no motion in the direction of the force, then no work is done by that force.

## What is the SI unit of force?

The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg. The second, unit of time — symbol s.

## What is work and its SI unit?

In physics, work is the energy transferred to or from an object via the application of force along a displacement. The SI unit of work is the joule (J).

## What is the formula for power in watts?

The formula for calculating wattage is: W (joules per second) = V (joules per coulomb) x A (coulombs per second) where W is watts, V is volts, and A is amperes of current. In practical terms, wattage is the power produced or used per second.

## Can work be done horizontally?

Horizontal forces affect horizontal motion. Work is done whenever a force or a component of a force results in a displacement. No component of the force is acting in the direction of motion when the book is moved horizontally with a constant velocity. The force and the displacement are independent.

## What are the units of work done?

work done is measured in joules (J) force is measured in newtons (N)

## How do I calculate power?

Power is a measure of the amount of work that can be done in a given amount of time. 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 PE and Ke?

Energy is the ability to do work. Potential Energy (PE) is stored energy due to position or state. PE due to gravity = m g h. Kinetic Energy (KE) is energy of motion.

## What is K in physics energy?

K, in physics, refers to the Boltzmann constant which is a pyhsical constant that relates the average relative kinetic energy (Ek) of particles in a gas with the temperature (T) of the gas. The symbol K stands for the kelvin, the base unit of temperature in the International System of Units (SI).