Weight lifting
Both Sara and Bella, who have the same mass, are standing firmly on the ground. As shown above, Sara is pulling a horizontal bar with a force of
while Bella is lifting a barbell of weight
Which of the following statements is correct?
a) The magnitude of the force with which the horizontal bar is pulling Sara is the same as that with which Bella is holding up the barbell.
b) The magnitude of the force with which the ground is holding up Sara is smaller than that with which the ground is holding up Bella.
c) The relationship between the force with which the ground is holding up Bella and the force with which the barbell is pressing down Bella is action and reaction.
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