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    How Galileo Inferred That

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    Yay Sandoval
    Galileo used experiments with balls rolling down inclined planes to infer that objects in a vacuum fall with uniform acceleration. He observed that the speed of balls rolling down planes increased by a constant amount each second. When the plane was vertical, simulating a free fall, the acceleration was greatest. This led Galileo to conclude that all objects in a vacuum experience uniform acceleration during free fall, regardless of their mass.

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    How Galileo Inferred That

    Uploaded by

    Yay Sandoval
    390 views13 pages
    Galileo used experiments with balls rolling down inclined planes to infer that objects in a vacuum fall with uniform acceleration. He observed that the speed of balls rolling down planes increased by a constant amount each second. When the plane was vertical, simulating a free fall, the acceleration was greatest. This led Galileo to conclude that all objects in a vacuum experience uniform acceleration during free fall, regardless of their mass.

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    Galileo used experiments with balls rolling down inclined planes to infer that objects in a vacuum fall with uniform acceleration. He observed that the speed of balls rolling down planes increased by a constant amount each second. When the plane was vertical, simulating a free fall, the acceleration was greatest. This led Galileo to conclude that all objects in a vacuum experience uniform acceleration during free fall, regardless of their mass.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    390 views13 pages

    How Galileo Inferred That

    Uploaded by

    Yay Sandoval
    Galileo used experiments with balls rolling down inclined planes to infer that objects in a vacuum fall with uniform acceleration. He observed that the speed of balls rolling down planes increased by a constant amount each second. When the plane was vertical, simulating a free fall, the acceleration was greatest. This led Galileo to conclude that all objects in a vacuum experience uniform acceleration during free fall, regardless of their mass.

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    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 13

    February 23, 2017

    How Galileo
    Inferred That
    Objects in
    Vacuum Fall
    with Uniform
    Acceleration
    OBJECTIVE:
    At the end of the lesson, you will be able
    to explain how Galileo inferred that
    objects in vacuum fall with uniform
    acceleration.
    Recall that a body moving with
    uniform acceleration changes its
    speed by a constant value per unit of
    time.
    Imagine yourself holding a bowling
    ball and a ping pong ball. If you
    drop these balls simultaneously,
    which ball do you think would have
    greater acceleration upon reaching
    the ground? Why?
    Galileo proved with his experiments that when
    objects are dropped simultaneously, they will
    reach the ground at the same time regardless of
    their masses and air resistance. In another set of
    experiments, he discovered that objects fall with
    uniform acceleration.
    Galileo was fascinated by the behavior of falling
    objects. He knew that falling objects increase
    their speed as they go down. This change in
    speed is acceleration. However, he did not have
    any equipment to measure this change, so he
    used inclined planes to lessen the acceleration of
    the moving bodies. He was then able to
    investigate the moving bodies carefully.
    On his experiment, he had observed the
    following:

    A ball rolling down an inclined plane


    increases its speed by the same value after every
    second. For example, the speed of a rolling ball
    was found to increase by 2 m/s every second.
    This means that the rolling ball would have the
    following speeds for every given second
     As the inclined plane becomes steeper, the
    acceleration of the rolling ball increases.
    The maximum acceleration of the rolling ball
    was reached when the inclined plane was
    positioned vertically as if the ball is simply
    falling
    These observations lead Galileo to conclude
    that regardless of the mass of objects and air
    resistance, falling objects would always have
    uniform acceleration.
    EXPLORE:
    Given two one peso coins, released at
    the same time, Coin A is dropped while
    Coin B is thrown horizontally coming
    from the same height. Which one do
    you think would reach the ground first?
    TRY IT:
    If an object falls with an
    acceleration of 5 m/s2 what would
    be its speed after 3 s given its
    starts at 0 m/s at 0s?
    WHAT DO YOU THINK?

    If a speedometer is attached to a
    falling object and the reading increases
    by 10 m/s every second, what is the
    object’s acceleration?
    KEY POINTS
    A body with uniform acceleration changes its
    speed by a constant value.
    Galileo proved that when objects are released
    simultaneously from a certain height, they
    reach the ground at the same time, regardless
    of their masses and air resistance.
    Galileo discovered that all objects fall with the
    uniform acceleration in vacuum.

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