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LabBRotation.pd 1 12 Adobe Acrob Questions 온라인으로 PDF Will a ladder placed against a rough vertical wall remain standing when the floor is so smooth that there is no friction between it and the feet of the ladder? Explain. 1. PDF PDF 주석 Which is more likely to break in use: a hammock stretched tightly between two trees, or one that sags quite a bit? Explain. 2. ザ파일ì 3. A non-uniform box, with its center of mass indicated by the dot, is placed on an inclined plane. In which of the four orientations shown, if any, does the box tip over? Explain. 보호 PDF Docume 4. Many small power drills are designed with a "pistol grip" handle. in repetitive work such as drywall installation, the n using

Answer 1

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For the ladder to be standing stable, W = N_2 (for vertical equilibrium) N_2 = normal force by floor on ladder W = weight of ladder N_1 = normal force by wall on ladder we see that there I no horizontal force to counter the force N_1 due to lack of friction from floor So, horizontal equilibrium can not be maintained and hence the ladder will not remain standing