PRACTICE IT Use the worked example above to help you solve this problem. A 46.6

Question

PRACTICE IT Use the worked example above to help you solve this problem. A 46.6 kg circus acrobat drops froma height of 2.45 meters straight down onto a springboard with a force constant of 7.39 x 103 N/m, as shown in the figure. By what maximum distance does she compress the spring? EXERCISE HINTS: GETTING STARTED I IM STUCK An 6.21 kg block drops straight down from a height of 1.18 m, striking a platform spring having a force constant of 1.18 x 103 N/m. Find the maximum compression of the spring. Submit Answer Save Progress

Explanation / Answer

the problerm can be solved using conservation of energy

Practice It:

let the compression of spring be x

46.6*9.8*(2.45+x) = 0.5*7.39*103*x2 = 3695x2

Or,1118.866 +456.68x=3695x2

x=0.616 m

Exercise:

let the compression of spring be x

6.21*9.8*(1.18+x) = 0.5*1.18*103*x2 = 590x2

Or,71.812 +60.858x=590x2

x=0.40 m

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