This was very helpful, thank you!

]]>You have been given a formula

The units match ok, seconds and kilograms, and T is already the subject of the equation. So it's just a case of putting in w = 2 and working out T. Order of steps to take:

divide w by 200

square root that number.

multiply by pi

multiply by 2

There's the required T .

round off.

Bob

]]>10. A weight hangs on a spring. The vibration period of that weight is the time in which it makes a complete cycle in motion. Suppose the relationship between the vibration period "T" (in seconds) and the weight "w" (in kilograms) is given by T = 2 pi SQRT(w / 200). Find the period T, to the nearest thousandth, for a spring with a hanging weight of 2.0 kilograms.

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