Question: Which Is The Correct Formula For Work Done?

What is work done SI unit?

Solution: S.I.

unit of work is Joule.

Work done when a force of 1 Newton displaces the body through a distance of 1 metre in the direction of force..

In which situation is work done?

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. No work is done by the hand on the book.

Is work done equal to energy?

Key terms. Net work done on an object equals the object’s change in kinetic energy. Also called the work-energy principle.

What are 3 types of work?

There are three kinds of work you do a regular basis.First, there’s work that gets immediate results. … Second, there’s work that should be done by someone else. … Third, there’s the work that contributes to long-term growth.More items…

What is power give example?

Power is defined as the ability to act or have influence over others. An example of power is the strength needed to run five miles. An example of power is the authority a local government has to collect taxes.

What is the formula of work done?

What is Work, Energy and Power?WorkDefinitionWork is said to be done when a force applied to an object moves that object.FormulaWe can calculate work by multiplying the force by the movement of the object. W = F × dUnitThe SI unit of work is the joule (J)8 more rows

What are the 3 version of work formula?

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 is SI unit of density?

Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth’s density is 5.51 grams per cubic centimetre. Density can also be expressed as kilograms per cubic metre (in metre-kilogram-second or SI units).

What SI unit means?

The SI base units are the standard units of measurement defined by the International System of Units (SI) for the seven base quantities of what is now known as the International System of Quantities: they are notably a basic set from which all other SI units can be derived.

What is SI unit current?

The ampere, symbol A, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge e to be 1.602 176 634 ×10−19 when expressed in the unit C, which is equal to A s, where the second is defined in terms of ∆νCs.

What is the symbol equation for work done?

Work and energy For example, if a force of 10 newtons (F = 10 N) acts along a point that travels 2 metres (s = 2 m), then W = Fs = (10 N) (2 m) = 20 J. This is approximately the work done lifting a 1 kg object from ground level to over a person’s head against the force of gravity.

What is work and its types?

Work: In physics work is said to be done when a force acting on a body displaces it through a certain distance. As work is the dot or scalar product of two vectors (force and displacement), therefore, it is a scalar quantity. … Special cases: CaseI: When the body moves in the direction of the force.

What is work and power?

Power is a measure of the amount of work done per unit time. … The work can be calculated as the area under a curve in a Force-Distance curve.

What is the formula of distance?

To solve for distance use the formula for distance d = st, or distance equals speed times time. Rate and speed are similar since they both represent some distance per unit time like miles per hour or kilometers per hour. If rate r is the same as speed s, r = s = d/t.

What is formula of potential energy?

The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

Is the formula of energy?

The SI unit of energy is Joules (J) which is also termed as Newton-meter. When a certain amount of force in Newton is applied to an object and it moved a certain distance in meters, then the energy applied will be Joules i.e. Newton-meters….K.E.Kinetic EnergymMass of the objectvThe velocity of the object

What are the two types of work?

First, let’s take a look at the five kinds of work we do every day:Reactionary Work. … Planning Work. … Procedural Work. … Insecurity Work. … Problem-Solving Work.