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Electromotive force is defined as the electric potential produced by either an electrochemical cell or by changing the magnetic field. EMF is the commonly used acronym for electromotive force. A generator or a battery is used for the conversion of energy from one form to another. In these devices, one terminal becomes positively charged while ...
Jun 4, 2021 · Work. In physics, work is related to the amount of energy transferred in or from a system by a force. It is a scalar-valued quantity with SI units of Joule . Work can be represented in a number of ways. For the case where a body is moving in a steady direction, the work done by a constant force acting parallel to the displacement is defined as.
In addition to force and displacement, work done also depends upon the angle between force and displacement. 4. If F or S is zero, work done is zero. 5. Also if F ≠ 0, S ≠ 0, b u t θ = 90 °, then W = F S cos 90 ° = 0 (∵ cos 90 = 0) 6. An example of work done by a constant force is the work done by a constant force of 2 Newtons on an ...
Mar 30, 2023 · In our daily routine, we carry out two types of work – physical work and mental work. Activities like playing, carrying a load, pedaling a bicycle, running, eating, bathing, etc., are examples of physical work. Whereas, reading, thinking, writing, solving a problem, etc., are examples of mental work. Nevertheless, we consume energy in both ...
When force and displacement are in the same direction, the work performed on an object is said to be positive work. For example: When a body moves on the horizontal surface, force and displacement act in the forward path. The work is done in this case known as Positive work.
Mathematically, work can be represented as: W = F · S W = FScosθ. Here, W is the work, F is the force, S is the displacement, and θ is the angle between the force and the displacement. Positive work: Whenever force, as well as displacement, are both throughout a relatively similar direction, this same work done on an item was said to have ...
The joule (pronounced / ˈdʒuːl /, JOOL or / ˈdʒaʊl / JOWL; symbol: J) is the unit of energy in the International System of Units (SI). [1] It is equal to the amount of work done when a force of one newton displaces a mass through a distance of one metre in the direction of that force. It is also the energy dissipated as heat when an ...
