Stretching a spring analysis and calculations (F=ke)

12 questions

1. Which of the following is the unit of force?
2. An object is stretched by a force, but returns to its original shape when the force is removed. This type of deformation is called ___ deformation.
3. An object is stretched by a force and will not return to its original shape when the force is removed. This type of deformation is called ___ deformation.
4. Which of the following describes the extension of a spring?
5. Which of the following describes a variable in an experiment?
6. Rearrange the formula a = b ÷ c to make b the subject.
7. Two variables are directly proportional. Which of the following statements about the two variables are correct?
8. The following graphs show extension against applied force for three different springs. The scales are the same on all of the graphs. Which graph represents the spring with the lowest spring constant?
9. For elastic deformation, extension (or compression) is directly proportional to the force applied. What is the name of this law, and how is it expressed as an equation?
10. Cars have stiff suspension springs to ensure a smoother ride. If the spring constant of one of these springs is 60 000 N/m, the force needed to compress the spring by 2.0 cm is ___ N.
11. A spring has an unstretched length of 0.6 m. When a force of 200 N is applied, it stretches to a length of 1.0 m. What is the spring constant of the spring?
12. Springs P and Q are the same length. The spring constant is 5000 N/m for P and 10 000 N/m for Q. Equal forces stretch P and Q elastically. The extension of P is 8 cm. What is the extension of Q?

License: OGL