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27.LetF,N and f denote the magnitudes of the contact force, normal force and friction force exerted by one surface on the other kept in contact . If none of these is zero , then the incorrect statement is 1 F>N 2 F>f 3 N>f 4 N- f < F< N+f |
| Answer» 27.LetF,N and f denote the magnitudes of the contact force, normal force and friction force exerted by one surface on the other kept in contact . If none of these is zero , then the incorrect statement is 1 F>N 2 F>f 3 N>f 4 N- f < F< N+f | |