Springs and pendulums

Answer Key - Grade 11 Science Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   A spring with a spring constant of 50 N/m is stretched 12 cm. How much force does it pull back with, Bo?

   6 N
2. 2.

   A spring with a spring constant of 400 N/m is stretched 3 cm. How much force does it pull back with, Esme?

   12 N
4. 3.

   In the wave diagram, what is the bob's amplitude, Jun?

   • 2 cm
   • 10 cm
   • 20 cm, from top to bottom
5. 4.

   In the wave diagram, where is the bob moving fastest, Luz?

   Use the picture in question 3.

   • It moves at one steady speed
   • At the peaks, 10 cm out
   • Where the trace crosses 0 cm
6. 5.

   A spring stretches 4 cm under a 2 N pull. How far does it stretch under a 4 N pull, Milo?

   • 6 cm
   • 16 cm
   • 8 cm
7. 6.

   Spring A has k = 100 N/m and spring B has k = 400 N/m. Which is stiffer, Noah?

   • They are equally stiff
   • Spring A
   • Spring B
8. 7.

   A spring is squeezed instead of stretched. Which way does its force point, Pia?

   • Outward, pushing back against the squeeze
   • Inward, adding to the squeeze
   • It has no force when squeezed
9. 8.

   Two pendulums have equal strings, but one bob is twice as heavy. How do their periods compare, Ren?

   • They are the same
   • The heavier one swings slower
   • The lighter one swings slower
10. 9.

    Which change makes a pendulum swing more slowly, Tala?

    • A shorter string
    • A longer string
    • A heavier bob
11. 10.

    A bigger mass is hung on the same spring. What happens to its bounce, Zee?

    • It bounces faster
    • Nothing changes
    • It bounces more slowly