Question 4
Newton's Laws and MomentumThe value of T in the figure above is
- A.10.0 N
- B.11.8 N
- C.20.0 N
- D.40.0 N
Show the answer and explanation
Answer: C (20.0 N)
Explanation
Each string makes 30° with the horizontal, so each pulls up with T sin 30°. Two strings support the 20 N weight: 2T × 0.5 = 20 N, so T = 20 N.