In electricity, degree is also a unit of work.
1 degree =3.6x 10 to the 6th joule.
Work is also called mechanical work. If an object is acted by a force and there is displacement in the direction of the force, we say that the force has done work for the object.
Work is a physical quantity, which indicates the accumulation of force on displacement in physics. SImilar to mechanical energy, work is scalar, and the unit of Si is Joule. 1j =1n m =1kgm2 s-2 The word "gong" was first coined by the French mathematician Jasper gustav Coriolis.
Extended data:
F is a constant force (that is, a force that will never change), S is the displacement of an object from A to B, α is the angle between F and X axis, and θ is the angle between S and X axis. If we make θ=0, then we only need to take S as the positive direction, and the Y axis is perpendicular to S, then the second term is 0, and AB=s=x, then?
Two factors of doing work:
1. Force acting on an object
2. The distance the object moves in the direction of this force.
Note: The work formula can only calculate the work done by a force or a resultant force. If you want to calculate the total work, you need to use the formulas of speed and mass.
Work can be described by speed and mass, and the work described in this way is called total work, so the total work is only related to the mass of the object and the initial and final speeds, and has nothing to do with the displacement mode of the object. From this, we draw the following conclusions:
In one-dimensional motion:
If an object moves at a uniform speed, then the total work of the object is zero;
If the resultant force of an object is f, and the displacement directions of the initial motion and the final motion are the same as f, then the total work of this object is greater than zero;
If the resultant force of an object is f, and the displacement directions of the initial motion and the final motion are opposite to f, then the total work of this object is less than zero;
Note: There is a difference between the total work and the work of a certain force, which cannot be confused.
The unit of work in the international system of units is Joule (J). Joule is defined as the mechanical work done by moving an object 65,438+0 meters with a force of 65,438+0 Newton. Newton meters of the same size are sometimes used, but usually Newton meters are used for torque to distinguish them from work and energy.
In the international unit, the unit of work is joule, which is referred to as' coke' for short, the symbol is J, and the unit is J1J =1N m, based on the contribution of British physicist James Prescott Joule (18 18~ 1889) to science.
Non-SI units include erg, foot pound, kilowatt hour, atmospheric pressure and horsepower hour. Because they have the same physical quantity-heat energy, we occasionally see units of measurement expressed in the form of heat energy, such as cal and BTU.
References:
Baidu Encyclopedia-Gong