Question

webassign.net 4. [-70.76 Points] DETAILS SERCP11 13.2.OP.008. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 1.10 kg block rests upon a frictionless, horizontal surface. The block is attached to a horizontal spring (of force constant k = 455 N/m) whose other end is anchored to a nearby wall. The block is pulled until it lies a distance x - 4.35 cm from its equilibrium position (x = 0). The block is then released and undergoes simple harmonic motion. (a) Calculate how much work must be done (in ) to stretch the spring from equilibrium (x - 0) to the pre-release position (x). (b) with what speed (in m/s) does the block pass through the equilibrium position once it has been released from? m/s Need Help? Read it 5. [-/0.76 Points) DETAILS SERCP11 13.2.P.009. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER

Answer 1

m=toto kg ,k=u55 N/m, Hi = 4.35cm Hi = 64035X10?m wome-energy theorem ca - ليا AP.E W = 1 1 3 kn 2-0) W = I x 455 X (4:35)²x104 W=0.430 J By Energy Conservation Po E Convert into kinetic BP. E = Dok. E Energy Ź Kn2 = 1 {mvmax kna Vmax = 0.8847 mle