Answer to Question #342573 in Physics for Nel

Question #342573

What horizontal force P can be applied to a 100-kg block in a level surface with coefficient of friction of 0.2, that will cause and acceleration of 2.50 m/s2?


1
Expert's answer
2022-05-18T15:27:53-0400
ma=FFfma=Fμmgma=F-F_f\\ ma=F-\mu mg

F=m(a+μg)=100kg(2.50 m/s2+0.29.8m/s2)=446NF=m(a+\mu g)\\ ={100\:\rm kg*(2.50\:\ m/s^2+0.2*9.8\:m /s^2)}\\ =446\:\rm N


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