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A chef places an open sack of flour on a kitchen scale. The scale reading of
40 N indicates that the scale is exerting an upward force of 40 N on the sack. The magnitude of this force equals the magnitude of the force of Earth’s gravitational attraction on the sack. The chef then exerts an upward force of
10 N on the bag and the scale reading falls to 30 N. Draw a free-body diagram of the latter situation.
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A chef places an open sack of flour on a kitchen scale. The scale reading of
40 N indicates that th...
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