What is the unit of work in the International System of Units (SI)?

What is the unit of work in the International System of Units (SI)?

• A. Newton (N)
• B. Watt (W)
• C. Joule (J)
• D. Pascal (Pa)

Answer: (C)

The unit of work in the International System of Units (SI) is the Joule (J). Work is defined in physics as the product of force and displacement in the direction of the force. Mathematically, this is expressed as: \[ \text{Work} = \text{Force} \times \text{Displacement} \times \cos(\theta) \] where \(\theta\) is the angle between the direction of the force and the direction of displacement. The SI unit of force is the Newton (N), and the SI unit of displacement is the meter (m). Therefore, when calculating work, we can see that: 1 Joule (J) = 1 Newton (N) × 1 meter (m). This means that one Joule is the amount of work done when a force of one Newton is applied over a distance of one meter in the direction of the force. In contrast, the other units mentioned serve different purposes. The Newton is a unit of force, the Watt is a unit of power (which is the rate at which work is done over time), and the Pascal is a unit of pressure. Each of these units plays a distinct role in the field of physics, but when specifically

The unit of work in the International System of Units (SI) is the Joule (J). Work is defined in physics as the product of force and displacement in the direction of the force. Mathematically, this is expressed as:

[ \text{Work} = \text{Force} \times \text{Displacement} \times \cos(\theta) ]

where (\theta) is the angle between the direction of the force and the direction of displacement. The SI unit of force is the Newton (N), and the SI unit of displacement is the meter (m). Therefore, when calculating work, we can see that:

1 Joule (J) = 1 Newton (N) × 1 meter (m).

This means that one Joule is the amount of work done when a force of one Newton is applied over a distance of one meter in the direction of the force.

In contrast, the other units mentioned serve different purposes. The Newton is a unit of force, the Watt is a unit of power (which is the rate at which work is done over time), and the Pascal is a unit of pressure. Each of these units plays a distinct role in the field of physics, but when specifically