Question: What Are The Two Formulas For Work?

What are the three formula for work?

Work formula is used to compute work done, force or displacement in any problem….W = F × d × c o s θ W= F × d × cos\theta W=F ×d ×cosθWIt is the work done by the force.FF is the force applied.dIt is the displacement caused by the forceθIt is the angle between the force vector and the displacement vector..

What are the two units of work?

Work (physics)WorkCommon symbolsWSI unitjoule (J)Other unitsFoot-pound, ErgIn SI base units1 kg⋅m2⋅s−23 more rows

What is the dimensional formula of work done?

Or, W = [M1 L1 T-2] × [M0 L1 T0] = [M1 L2 T-2]. Therefore, work is dimensionally represented as [M1 L2 T-2].

What is work and its unit?

Work : Work can be defined as the product of the force (F) and the distance (s) moved along the direction of the force. Work done = Force × displacement = F × s. [This formula is used in only translatory motion of the object] 1) Work is a scalar quantity. 2) Unit of work is ‘N – m’ or ‘Joule’ (J).

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.

How do you calculate time and work?

Important Time and Work FormulaWork Done = Time Taken × Rate of Work.Rate of Work = 1 / Time Taken.Time Taken = 1 / Rate of Work.If a piece of work is done in x number of days, then the work done in one day = 1/x.Total Wok Done = Number of Days × Efficiency.Efficiency and Time are inversely proportional to each other.More items…

What is work formula?

We can calculate work by multiplying the force by the movement of the object. W = F × d. Unit. The SI unit of work is the joule (J)

What is the common formula for work?

Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.

How do you calculate the work done?

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

What is rate of work done?

Power is often measured in joules of work per second. The unit of measurement for power is the (W). One watt is equal to one joule of work done in one second. If an object does a large amount of work, its power is usually measured in units of 1000 watts, or kilowatts.

What is SI unit of work done?

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.

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 the weight formula?

The most common definition of weight found in introductory physics textbooks defines weight as the force exerted on a body by gravity. This is often expressed in the formula W = mg, where W is the weight, m the mass of the object, and g gravitational acceleration.

What is the formula for work and 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 the formula for calculating energy?

The formula that links energy and power is: Energy = Power x Time. The unit of energy is the joule, the unit of power is the watt, and the unit of time is the second.

What is transferred when work is done?

Energy and work Work is the measure of energy transfer when a force (F) moves an object through a distance (d). So when work is done, energy has been transferred from one energy store to another, and so: energy transferred = work done.