本题目来源于试卷: newnewnewnew，类别为 IB物理学
[问答题]
If the horizontal acceleration produced by an eyy (c5cry.t h ;vhrv)4arthquake is a *jug(pxa,7 ycqfbv1fd 2g 3h1rk3n.p r-bc o3 , and if an object is going t 1b3n*p ch-7qc1 .3xfr(br kpu yg,vj2adgfo3o "hold its place" on the ground, show that the coefficient of static friction with the ground must be at least $\mu_{\mathrm{s}}=a / g$ . (b) The famous Loma Prieta earthquake that stopped the 1989 World Series produced ground accelerations of up to 4.0 $\mathrm{~m} / \mathrm{s}^{2}$ in the San Francisco Bay Area. Would a chair have started to slide on a linoleum floor with coefficient of static friction 0.25 ?
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