The massless ropes that do not stretch and massless pulleys and cogs are great approximation for the real world in nearly everything available at home.
If kids can not relate to those, it's because they don't look into the machines they have around them, not because the model isn't realistic.
The massless ropes that do not stretch and massless pulleys and cogs are great approximation for the real world in nearly everything available at home.
If kids can not relate to those, it's because they don't look into the machines they have around them, not because the model isn't realistic.