Nano PHYSICS . MECHANICS . DYNAMICS . MASS AND WEIGHT

Definition of Weight

Weight is the gravitational force on an object. Near Earth, it is often modeled as W = mg and points toward Earth's center.

Physics · Mechanics · Dynamics · Mass and Weight · Definition of Weight
Access for this nano-lesson
Unsigned visitors can show & copy prompts for Steps 1-3. Signed-in free accounts can also Run with AI for Steps 1-2. Paid accounts unlock everything (Steps 1-6 + Help prompts + AI).
Steps 1-3 Free Steps 4-6 Paid
STEP 1
Orient: define weight
Free
Establish weight as a force due to gravitational interaction.
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Goal: define weight as gravitational force with units of newtons.
STEP 2
Conceptual grounding: build the model
Free
Build a near-Earth weight model with correct units and direction.
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Goal: draw weight toward Earth's center and apply W = mg under stated assumptions.
STEP 3
Real-world connection: interpret the physics
Free
Apply weight reasoning to tables, ramps, free fall, scales, and environments.
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Goal: distinguish weight from mass, normal force, and scale readings.
STEP 4
Check your understanding: diagnostic mini-quiz
Paid
Attempt each question before revealing the reasoning.
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Goal: identify and correct units, force, measurement, and assumption errors before they become calculation errors.
STEP 5
Practice: reason through increasingly rich situations
Paid
Apply the model to situations that grow in complexity.
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Goal: write concise, physically justified explanations.