Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**camicat****Member**- Registered: 2020-02-27
- Posts: 11

Hello, I'm once again posting because I need help with a word problem. I can't even decipher what I need to solve. Here is the word problem, thanks in advance for any help!

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.

Offline

**Bob****Administrator**- Registered: 2010-06-20
- Posts: 9,262

hi camicat

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

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

Offline

**camicat****Member**- Registered: 2020-02-27
- Posts: 11

Hi, Bob!

This was very helpful, thank you!

Offline

Pages: **1**