Jerome places a bag of flour on a scale. The scale shows that the bag has a weight of 17 N. Which is the reaction force of the bag sitting on the scale?

A. The scale exerts a 17 N force up on the bag.

B. The scale exerts a 17 N force down on the counter.

C. Earth exerts a 17 N force down on the bag.

D. The bag exerts a 17 N force down on the scale.

Question

Beamer

Physics

28 July, 19:27

Jerome places a bag of flour on a scale. The scale shows that the bag has a weight of 17 N. Which is the reaction force of the bag sitting on the scale?

A. The scale exerts a 17 N force up on the bag.

B. The scale exerts a 17 N force down on the counter.

C. Earth exerts a 17 N force down on the bag.

D. The bag exerts a 17 N force down on the scale.

+4

Answers (1)

Know the Answer?

Grady Archer · Answer 1

A. The scale exerts a 17 N force up on the bag.

If it didn't, then the vertical forces on the bag would be unbalanced,

and the bag would be accelerating either up or down.