(a) In Example 6.7 (Section 6.3) it was calculated that with the air track turned off, the glider travels 8.6 cm before it stops instantaneously. How large would the coefficient of static friction its have to be to keep the glider from springing back to the left? (b) If the coefficient of static friction between the glider and the track is

Solution 39E Step 1 of 5: a) Step 2 of 5: According to newton’s second law F = ma y y Equate vertical forces n mg = 0 n = mg fs= sg Step 3 of 5: Equate horizontal forces F x ma x fs F spring= 0 mg kx = 0 s = kx = 20 N/m ×0.086 m s mg 0.100 kg×9.80 m/s = 1.76