Leaving Cert Ireland · Physics

Mechanics

9 practice questions, each with the answer and an explanation.

Practise Mechanics now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 9 questions

  1. A 10 kg crate on a rough horizontal floor is pushed by a horizontal force of 60 N. The coefficient of kinetic friction is 0.5. Taking m/s, find the acceleration.
  2. A 10 kg crate on a rough horizontal floor is pushed by a horizontal force of 30 N. The coefficient of kinetic friction is 0.25. Taking m/s, find the acceleration.
  3. A 5 kg crate on a rough horizontal floor is pushed by a horizontal force of 40 N. The coefficient of kinetic friction is 0.25. Taking m/s, find the acceleration.
  4. A 1 kg object moves in a horizontal circle of radius 0.5 m at a constant speed of 6 m/s. What is the centripetal force acting on it?
  5. An object moves uniformly on a circle of radius 2 m with a period of 2 s. What is its speed?
  6. An object moves uniformly on a circle of radius 5 m with a period of 10 s. What is its speed?
  7. A spring of spring constant 100 N/m is stretched by 0.02 m. What is the restoring force?
  8. A spring of spring constant 50 N/m is stretched by 0.02 m. What is the restoring force?
  9. A spring of spring constant 100 N/m is stretched by 0.1 m. What is the restoring force?

Keep practising

More Leaving Cert Ireland topics

All Leaving Cert Ireland practice →

Mechanics in other exams

Ready for the full Leaving Cert Ireland test?

Take a mock testLeaving Cert Ireland hub