which force best represents $f_{g}$?\na weight lifter is pushing a barbell upward with a force of 90 n.\nthe…

which force best represents $f_{g}$?\na weight lifter is pushing a barbell upward with a force of 90 n.\nthe weight of a barbell acting on a weight lifter is 80 n.\nthe amount of upward force of a table on a box is 25 n.\na box on a rough table has difficulty sliding past 25 n of force.

which force best represents $f_{g}$?\na weight lifter is pushing a barbell upward with a force of 90 n.\nthe weight of a barbell acting on a weight lifter is 80 n.\nthe amount of upward force of a table on a box is 25 n.\na box on a rough table has difficulty sliding past 25 n of force.

Answer

Brief Explanations:

$F_g$ represents the force of gravity. The weight of an object is the force due to gravity acting on it. Among the options, the weight of a barbell acting on a weight - lifter is a gravitational force. The other options are about applied forces (weight - lifter pushing barbell), normal force (table on box), and frictional force (box on rough table).

Answer:

The weight of a barbell acting on a weight lifter is 80 N.