Answer: 2000 N.
- A 2000 N
- B 4000 N
- C 6000 N
- D 8000 N
Correct answer: A. 2000 N
Explanation: Thrust = rate of mass ejection x exhaust speed = 10 x 200 = 2000 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.