Calculating Weight from Mass and Gravity
7 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What determines the weight of an object on Earth?

  • Its color
  • Its density
  • Its mass (correct)
  • Its volume
  • What is the equation to compute weight on Earth?

  • $\text{weight} = \text{mass} \times \text{density}$
  • $\text{weight} = \text{mass} \times \text{gravitational field strength}$ (correct)
  • $\text{weight} = \text{mass} - \text{gravitational field strength}$
  • $\text{weight} = \text{mass} \div \text{density}$
  • If an object's mass increases, what happens to its weight?

  • Weight increases (correct)
  • Weight remains the same
  • Weight decreases
  • Weight becomes zero
  • What is the gravitational field strength on Earth?

    <p>10 N/kg</p> Signup and view all the answers

    How does gravity on the moon compare to gravity on Earth?

    <p>Gravity is weaker on the moon</p> Signup and view all the answers

    When throwing a ball upward, what happens as it moves closer to the ground?

    <p>It speeds up</p> Signup and view all the answers

    What force opposes the motion when pushing or pulling a wooden crate on the floor?

    <p>Frictional force</p> Signup and view all the answers

    Study Notes

    Weight and Gravity

    • The weight of an object on Earth is determined by both its mass and the gravitational field strength of the planet.
    • The equation to compute weight on Earth is W = mg, where W is the weight, m is the mass, and g is the gravitational field strength.

    Effect of Mass on Weight

    • If an object's mass increases, its weight also increases, as long as the gravitational field strength remains constant.

    Gravitational Field Strength on Earth

    • The gravitational field strength on Earth is approximately 9.8 N/kg or 9.8 m/s^2.

    Gravity on the Moon vs Earth

    • Gravity on the moon is about 1/6 of the gravity on Earth, due to the moon's smaller mass and radius.

    Motion and Gravity

    • When throwing a ball upward, its weight is opposite to the direction of its motion, and as it moves closer to the ground, its weight increases, causing it to accelerate downward.

    Frictional Force

    • The force that opposes the motion when pushing or pulling a wooden crate on the floor is friction, which acts opposite to the direction of motion.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    This quiz explores the concept of weight as the force of gravity acting on an object based on its mass and the gravitational field strength. In this scenario, a mass of 40 kg is used to calculate the corresponding weight on Earth.

    More Like This

    Difference Between Mass and Weight
    10 questions
    Forces and Motion: Weight and Mass
    5 questions
    Gravitation and Universal Law of Gravitation
    5 questions
    Calculations of Force, Mass, and Gravity
    5 questions
    Use Quizgecko on...
    Browser
    Browser