Springs and pendulums

Answer Key - Grade 11 Science Worksheet

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

1. 1.

   A bob hangs on a 1 m string and swings in small arcs. With g = 9.8 m/s², what is its period, to the nearest hundredth, Ari?

   2.01 s
2. 2.

   A bob hangs on a 0.25 m string and swings in small arcs. With g = 9.8 m/s², what is its period, to the nearest hundredth, Bo?

   1 s
3. 3.

   A bob hangs on a 2.5 m string and swings in small arcs. With g = 9.8 m/s², what is its period, to the nearest hundredth, Esme?

   3.17 s
5. 4.

   Using the table, what period should the 4 m pendulum have, Jun?

   • 8.0 s
   • 4.0 s
   • 16.0 s
6. 5.

   Using the table, what happens to the period when the length becomes 4 times as long, Kira?

   Use the picture in question 4.

   • It doubles
   • It becomes 4 times as long
   • It halves
8. 6.

   In the force-extension graph, what is the spring constant, Milo?

   • 200 N/m
   • 0.005 N/m
   • 12 N/m
9. 7.

   In the force-extension graph, what force stretches the spring 0.04 m, Noah?

   Use the picture in question 6.

   • 0.04 N
   • 8 N
   • 4 N
10. 8.

    In the force-extension graph, what does the straight line through the origin show, Pia?

    Use the picture in question 6.

    • The force stays the same
    • Stretch is proportional to force
    • The spring gets stiffer as it stretches
11. 9.

    Where does a swinging bob have the most kinetic energy, Tala?

    • At each end
    • At the lowest point
    • It has the same kinetic energy everywhere
12. 10.

    Where is a bouncing mass on a spring momentarily at rest, Zee?

    • At the top and bottom of its bounce
    • Nowhere, since it keeps moving
    • At the middle of its bounce