which shows the correct free body diagram of the hanging picture?
which shows the correct free body diagram of the hanging picture?
Answer
Explanation:
Step1: Analyze forces on hanging picture
A hanging picture has gravitational force ($F_g$) acting down - ward due to Earth's gravity. It is held up by one or more strings, and the tension force ($F_T$) in the strings acts upward to balance the gravitational force. There is no normal force ($F_N$) as there is no surface - to - surface contact for a freely hanging object. Also, there is no other force like $F_P$ mentioned in the context of a simple hanging picture situation.
Step2: Select correct free - body diagram
The correct free - body diagram should have a downward gravitational force $F_g$ and one or more upward tension forces $F_T$. The third diagram from the left has a downward $F_g$ and two upward tension forces $F_T$ which is correct for a picture hung by two strings.
Answer:
The third diagram from the left (with $F_T$ pointing diagonally up on both sides and $F_g$ pointing down)