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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

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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