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If `tan 0 gt mu` then minimum force needed to stay block at rest is A. `mg sin theta - mu mg cos theta`B. `(mg sin theta - mu mg cos theta)/(sqrt(1+mu^(2)))`C. `mg sin theta+mu mg cos theta`D. Zero |
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Answer» Correct Answer - B If `tan theta gt mu` …………. `F cos phi+muN = mg sin theta` `N = mg cos theta+F sin phi` `F = (mg sin theta - mu mg cos theta)/(mu sin phi+cos phi)` |
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