Answer: 50 N.
- A 50 N
- B 60 N
- C 80 N
- D 100 N
Correct answer: A. 50 N
Explanation: a = 100/10 = 10 m/s<sup>2.</sup> Tension between 5 kg and 3 kg block = (3+2) x 10 = 50 N.
Free-body diagram of a block on an incline: weight (mg) resolves into mg sinθ along the slope and mg cosθ into the slope, balanced by the normal force N and friction f.
Concept context
Newton's three laws, friction, circular motion, and free body diagrams.