Wed Oct2 Secure hetps Ch L9a Problem 7.23 Problem 7.23 Part A The graph in the m

Question

Wed Oct2 Secure hetps Ch L9a Problem 7.23 Problem 7.23 Part A The graph in the magnitude of the force xared How much .s needed toshetsh this "ping a distance of 40an . stating win a unetched z the spring is sretched Express your answer in Joules to two significant figures Incorrect; One attempt remaining: Try Again Part B F(N) How much work is neaded to strelch this spring from z 3.0 cm to2-7.0 m7 Express your answer in Joules to two significant figures 350 250 1 2 34567 9ao.@ Bul ? MacBook Air 2 3 5

Explanation / Answer

Slope of F vs x graph gives spring constant=150/0.08=1875 N/m

Work done=0.5*K*x*x

x=0.08 m

Work done=6 J

Part B

Work done=0.5*K*(0.07*0.07-0.03*0.03)=3.75 J

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