Question

Can't solve part D.

(6%) Problem 16: You give a crate of mass = 1.00 ke an initial speed of #4.00 up an incline of The crate the slides along the incline, reaches a spring of spring constant ke 55 N/ml and compresses the spring by ASH 150 cm before stopping crs along the in that the crate assuming there is no friction? 25% Part (a) What is the distano d=2.90 d-29 v Correct 25% Part (b) What distance d., in meters, along the incline had the crate moved when it just touched the spring? d. = 2.75 Correct! Ween th which of the options below would be the correct equation for the kinetic 25% Parte) If there were friction friction force? 10 wongcase Correct me. what coefficient of kinetic friction would stop the crate after it travels d ust * 250 Partva) If there were friction between the crate before it compresses the spring) PX 0.27 Grade Summary 1000 cotan atan

Answer 1

Concept – use the work energy theorem to find the work done by friction which will be equal to change in kinetic energy to find the required coefficient of kinetic friction as shown below ***********************************************************************************************
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mon No Vi 十到 T% Tot macoso mgsino d) f = Mymg cose 1 ds = 2.75m So, wf = AKE - - fds = 0-1 mui? - (Mangcoso) ds = - 1/2 mv.² » ex = :² zgosods = 0.307) , Vi= 4 m/s