A 4 kg mass moves in a horizontal circle of radius 8 m at a speed of 10 m/s. What centripetal force acts on it?
Answer and explanation
Correct answer: D. 50 N
- Step 1: The force is N. Answer: 50 N. Why not the others: 5 N, 3200 N and 25 N don't fit.
Practise more Physics and Chemistry Problems.
Free questions with an explanation for every one, and full timed UNI Admission Exam (Peru) mock tests.
More Physics and Chemistry Problems questions
- A car starts from rest and accelerates uniformly at for s. Its final speed is:
- A stone is dropped from a height of m. Taking and ignoring air, how long does it take to land?
- A ball is thrown horizontally at from a cliff m high (). How far from the base of the cliff do…
- A kg block is pulled by a N force to the right and a N force to the left. Its acceleration is:
- A block slides down a frictionless incline of . With , its acceleration is:
- A kg object moving at m/s is stopped by friction over m. The average friction force is: