Tech Support: Ultimate Pulleys


pulley guy

Downloads/Resources

Helpful Tips

  • The springs provided with the ultimate pulleys kit are used for Hooke's Law activities. This is a special bonus!
  • The Ultimate Pulleys kit is called "ultimate" because you can do so many different experiments with the kit parts. You can build pulley systems up to a mechanical advantage of 6, but you can also do experiments to study angular velocity and acceleration, moment of inertia, and torque.

FAQs

Q: Where does the brass clip at the end of the yellow pulley string attach to when I want to construct a pulley system with a mechanical advantage of 2, 4, or 6?

A: When rigging up an even number of pulleys, you must slide the brass clip over the spindle. This will allow you to pull down on the pulley string to operate the system.

Q: Where does the brass clip at the end of the yellow pulley string attach to when I want to construct a pulley system with a mechanical advantage of 1, 3, or 5?

A: When rigging up an odd number of pulleys, you must attach the brass clip to the eye hook on the bottom block of the pulley. This will allow you to pull down on the pulley string to operate the system.

Q: How do I keep pulley wheels from sliding off the spindle?

A: Use the spacers and cap it off with the short piece of plastic tubing.

Q: How do I keep pulley wheels from sliding off the bottom block?

A: Use the long, tubular hex nut and place it on the bottom block screw. Use a spacer if necessary.

Q: I tried setting up the rotational inertia experiment, and I need 5 hex nuts. Two for each end of the spinner arm, and one for the weight hanger. I can only find 4 hex nuts in the kit. What should I do?

A: It isn't necessary to use two hex nuts on each end of the spinner arm. Instead of setting up the spinner arm with hex nuts and washers for weights, simply use one hex nut on each end and change its position by turning it on the rod. One hex nut on each end will provide plenty of weight for the experiment.