Weight Formula:
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The weight formula calculates the force exerted by gravity on an object. Weight is different from mass, as it depends on the gravitational field strength. The standard formula is W = m × g, where W is weight in newtons (N), m is mass in kilograms (kg), and g is gravitational acceleration in meters per second squared (m/s²).
The calculator uses the weight formula:
Where:
Explanation: On Earth, the standard value for g is approximately 9.81 m/s², but this varies slightly depending on location and altitude.
Details: Calculating weight is fundamental in physics and engineering. It helps determine the force objects exert on surfaces, structural load requirements, and is essential for understanding basic mechanics and gravitational forces.
Tips: Enter mass in kilograms and gravitational acceleration in m/s². For Earth's surface, use g = 9.81 m/s². For other celestial bodies, use their specific gravitational values.
Q1: What's the difference between weight and mass?
A: Mass is the amount of matter in an object (constant), while weight is the force of gravity acting on that mass (varies with gravitational field).
Q2: Why is weight measured in newtons?
A: Weight is a force, and the SI unit for force is the newton (N). Mass is measured in kilograms (kg).
Q3: How does weight change on different planets?
A: Weight changes with gravitational acceleration. For example, on Mars (g ≈ 3.71 m/s²), objects weigh less than on Earth.
Q4: What is Earth's gravitational acceleration?
A: Standard Earth gravity is 9.80665 m/s², often rounded to 9.81 m/s² for calculations.
Q5: Can weight be zero?
A: Yes, in microgravity environments like orbit, objects experience weightlessness, though their mass remains unchanged.