Forces and Their Representation

Now that you have explored forces, gravity and free body diagrams, complete the activity below to exhibit your understanding of this topic. Make sure to completely answer each question and to show all of your work.

This activity is available below or in a printable version.

1. For each of the diagrams below, determine the magnitude and direction of a single force that would make the net force on the object equal zero.

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    2. Complete the following table about various objects on the surface of these objects in our solar system.

    Planet
    mass of object
    gravitational acceleration (g)
    weight of object
    Earth
    24.1 kg
    9.8 m/s2
    		  
    Sun
    274 m/s2
    48,200 N
    Mercury
    60 kg
    222 N
    Pluto
    0.61 m/s2
    219 N
    Jupiter
    20 kg
    25.9 m/s2
    		  
    Moon
    27 kg
    44 N
    Uranus
    9.01 m/s2
    892 N

    3. Draw a free body diagrams for the underlined object in each situation below.

    a. A roller coaster is upside down as it rolls frictionless through a loop-De-loop.

    b. A hockey puck is being hit horizontally by a hockey stick on frictionless ice.

    c. A crate being pulled along a rough surface at a constant velocity with a horizontal rope.

    d. A piano being pushed up a frictionless ramp into a moving truck

    e. A cannonball  that flies through the air after being shot from a cannon.

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Once you have finished answering the questions, submit your responses to the dropbox.