Gravity, Mass, and Weight: A Quick Guide

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Master the basics of gravity, weight, and mass in ten concise slides.

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windarti

Indonesia

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Gravity, Mass, and Weight: A Quick GuideVersión en línea Master the basics of gravity, weight, and mass in ten concise slides. por windarti 1 What is Gravity? Gravity is the force that attracts objects toward the centre of massive bodies like Earth. It determines how objects fall and stay grounded. 2 Weight vs. Mass Weight is the pull of gravity on an object, measured in newtons (N). Mass is the amount of matter, measured in kilograms (kg). 3 The Weight Equation On Earth, gravity strength is about 10 N per 1 kg. This gives the simple equation: W = m × 10 (N). 4 Calculating Weight If a person has a mass of 75 kg, their weight is approximately 750 N on Earth using W = m × 10. 5 Mass Is Not Weight Mass stays the same regardless of location, but weight changes with gravity. This explains why astronauts weigh less on the Moon. 6 The Surface Contact Force The desk's contact force supports a resting object, balancing gravity. It equals the object's weight when the surface is stationary. 7 Weight vs. Surface Support If the weight exceeds the support, surfaces may fail or objects sink. The balance between weight and contact force prevents motion. 8 Examples in Real Life An elephant's weight distributes across four feet; the ground provides a matching contact force to keep it supported. This demonstrates weight and contact force in action. 9 Why Gravity Varies by Location Gravity depends on mass and distance. Planets and moons differ, so weight varies with location while mass remains constant. 10 Summary & Quick Quiz Recap: Gravity pulls, weight measures that pull, mass is how much matter you have. Quiz: If mass is 60 kg, what is weight on Earth? (W = 60 × 10 = 600 N).

Gravity, Mass, and Weight: A Quick GuideVersión en línea

Master the basics of gravity, weight, and mass in ten concise slides.

por windarti

What is Gravity?

Gravity is the force that attracts objects toward the centre of massive bodies like Earth. It determines how objects fall and stay grounded.

Weight vs. Mass

Weight is the pull of gravity on an object, measured in newtons (N). Mass is the amount of matter, measured in kilograms (kg).

The Weight Equation

On Earth, gravity strength is about 10 N per 1 kg. This gives the simple equation: W = m × 10 (N).

Calculating Weight

If a person has a mass of 75 kg, their weight is approximately 750 N on Earth using W = m × 10.

Mass Is Not Weight

Mass stays the same regardless of location, but weight changes with gravity. This explains why astronauts weigh less on the Moon.

The Surface Contact Force

The desk's contact force supports a resting object, balancing gravity. It equals the object's weight when the surface is stationary.

Weight vs. Surface Support

If the weight exceeds the support, surfaces may fail or objects sink. The balance between weight and contact force prevents motion.

Examples in Real Life

An elephant's weight distributes across four feet; the ground provides a matching contact force to keep it supported. This demonstrates weight and contact force in action.

Why Gravity Varies by Location

Gravity depends on mass and distance. Planets and moons differ, so weight varies with location while mass remains constant.

Summary & Quick Quiz

Recap: Gravity pulls, weight measures that pull, mass is how much matter you have. Quiz: If mass is 60 kg, what is weight on Earth? (W = 60 × 10 = 600 N).

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