UNIT 4. DYNAMICS

At the end of this unit the student should be able to:

- Distinguish between mass and weight and calculate weight using the

  acceleration due to gravity

- Differentiate between static and kinetic friction

- State and apply Newton’s second law of motion

- Demonstrate proficiency in solving problems that involve objects in

  motion with constant acceleration by analyzing the resultant force(s) in

  horizontal surfaces, inclined planes and pulley systems (Atwood's

  machines)

- State and apply Newton’s third law of motion

- Explain the characteristics of uniform circular motion

- Derive the equation for centripetal acceleration of an object moving

  in a circle at constant speed

- Understand that centripetal force is not a new type of force

- Understand that centrifugal force does not exist

- Demonstrate proficiency in solving problems involving banking

  angles, the conical pendulum and motion in a vertical circle

- State and apply Newton's law of universal gravitation

- Describe Cavendish's experiment to determine the value of the

  universal gravitation constant

- Derive the acceleration due to gravity at the surface of the earth or

  other planets

- Explain and apply the relationship between the speed and the orbital

  radius of a satellite

- Demonstrate proficiency in solving problems involving apparent

  weightlessness in a satellite and in an elevator

- State Kepler’s three laws of planetary motion

- Derive and apply Kepler’s third law of planetary motion