3
QuizMultiple Choice

Introduction to Forces

Question 3 • AA-F26 Physical Science

Which force best represents Fg?

Answer
A
A weight lifter is pushing a barbell upward with a force of 90 N.
B
The weight of a barbell acting on a weight lifter is 80 N.
C
The amount of upward force of a table on a box is 25 N.
D
A box on a rough table has difficulty sliding past 25 N of force.

Explanation

Fg represents the force of gravity, also called weight. The barbell’s weight acting on the weight lifter is a gravitational force, so choice B best represents Fg. The other choices describe an applied push, an upward support force, or friction.

AI-written and checked against the verified answer.

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