Make a Simple Pulley

Materials:

  • wire coat hanger
  • wooden spool
  • string
  • cuphook
  • board (fixed)
  • weight (book)

Method:

1.Cut the bottom of the coat hanger and insert the spool into the open ends of the wire.

2.Adjust the wire so that the spool turns easily, and then bend the ends down to keep the wires from spreading.

3.Screw a cuphook into a fixed board.

4.Hang the coat hanger pulley on the cuphook.

5.Loop a string once around the spool.

6.Attach a weight, such as a book, to the end of the string.

7.Pull the string to lift the weight.

8.What would happen if you used two pulleys instead of only one?

Student Activities