Quadratic Beads
| Abstract |
Beads on a string separated by quadratic distances hit the ground at equal time intervals.
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| Portable | Yes | ||
| Principles Illustrated |
Constant acceleration due to gravity causes the distance fallen by an object to increase proportional to the square of time.
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| NCEA & Science Curriculum | |||
| Teacher Guide |
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| Video |
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| Instructions | Attach beads or nuts or some other dense objects to a string with quadratic spacing starting with perhaps 5 cm and working up to close to 1 metre. When dropped, the beads hit the floor with a constant separation in time. When a second string with uniformly spaced beads is dropped the beads hit with decreasing separation in time. |
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| Related Resources |
Film a dropping ball and use VideoPoint to analyse the motion.
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| References |
PIRA 1C20.20
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| Credits |
This teaching resource was developed with support from |
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| Copyright |