How do pulleys work? Join Adriana in the Science Gallery to learn about these simple machines exhibited in the pulley chairs!
Which chair would you choose to race in?
How do pulleys work? Join Adriana in the Science Gallery to learn about these simple machines exhibited in the pulley chairs!
How do pulleys work? Join Adriana in the Science Gallery to learn about these simple machines exhibited in the pulley chairs!
Which chair would you choose to race in?