What is work? write its SI unit and CGS system unit?

Question

Answer

The work done by force in moving a body is equal to the product of magnitude of forces nd the distance moved by the body in direction of force.SI unit of work is Joule nd CGS units the force is dyne nd displacement is centimeter so, the Cgs Sl units of work is erg::::::

Answer

Work is done when force is applied through some distance.Its SI unit is joule and CGS unit is erg

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Si unit is joule

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Work= Force×displacement=N×m=Nm=Joule

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Work is force applied over distance. The CGS unit of Work is the erg.

Answer

What is work?

Work is defined as the measure of energy transferred by a force acting through a distance. In simple terms, it is the effort exerted on an object to move it from one position to another against a force. Work is directly related to the displacement of an object and the force applied to it.

SI unit of work:

The SI unit of work is the joule (J). One joule is equal to the work done when a force of one newton is applied to move an object through a distance of one meter in the direction of the force. Mathematically, work (W) is calculated as the product of force (F) and displacement (d) in the direction of the force: W = F * d.

CGS system unit of work:

In the CGS (Centimeter-Gram-Second) system, the unit of work is the erg. One erg is equal to the work done when a force of one dyne is applied to move an object through a distance of one centimeter in the direction of the force. Mathematically, work (W) in ergs is calculated as the product of force (F) in dynes and displacement (d) in centimeters: W = F * d.

Explanation:

1. Work as energy transfer:
Work is the transfer of energy from one object to another. When work is done on an object, energy is transferred to that object, and when work is done by an object, energy is transferred from that object. This energy transfer can take various forms, such as mechanical, electrical, or thermal energy.

2. Work and force:
Work is directly related to the force applied to an object. The force must be applied in the direction of the displacement for work to be done. If the force and displacement are in different directions, the work done may be negative, indicating energy transfer in the opposite direction.

3. Work and displacement:
The displacement of an object is a crucial factor in calculating work. Only the component of the displacement in the direction of the force is considered for work done. If the force and displacement are perpendicular to each other, no work is done.

4. Calculation of work:
To calculate work, multiply the magnitude of the force applied to an object by the magnitude of the displacement in the direction of the force. The resulting value represents the amount of energy transferred. The unit of work depends on the system of measurement used, with joules (J) in the SI system and ergs in the CGS system.

5. Significance of work:
Work is a crucial concept in physics as it relates to the transfer and transformation of energy. It helps quantify the effort required to move objects, perform tasks, and understand the relationship between force, displacement, and energy. Work also plays a significant role in various fields, including engineering, mechanics, and thermodynamics.

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