Two-mass-skate bicycle

High school (ages 12+)
Transportation

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/two-mass-skate-bicycle

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the inventor?David L. Jones
2. What is the structural configuration?Dual-frame design with two independently articulating masses
3. Why does the bike wobble?Because the front and rear parts are connected by a pivot, letting them tilt and rotate, which changes how the bike handles.
4. How does a rider control the wobbly bike?The rider must steer and shift their body to keep the two parts balanced, using their posture and steering together.

Kinematic Chain: A series of rigid bodies connected by joints, allowing for relative motion.
Degrees of Freedom: The number of independent parameters that define the configuration of a system.
Proprioception: The sense of the relative position of one's own parts of the body and strength of effort being employed in movement.
Articulated Vehicle: A vehicle composed of two or more rigid sections connected by a pivot joint.