Chapter 5. Angle at which an object slips on an incline (5-5)

Question

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{"title":"Coefficient of static friction for an object at rest on a surface","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"1,15,37,66\"}]"} {"title":"Angle of the surface at which the object begins to slip","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"118,11,119,13\"},{\"shape\":\"rect\",\"coords\":\"204,6,234,57\"}]"}

Question

WC+7x6fJu0Uv/rl0fOtmnuO3mkUlRgiTzq0pEuD1V7yOYmCMbqteWg4vrjP1A/vi2LaFHNZMzceoMxVh
{"title":"Coefficient of static friction for an object at rest on a surface","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"1,15,37,66\"}]"} {"title":"Angle of the surface at which the object begins to slip","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"118,11,119,13\"},{\"shape\":\"rect\",\"coords\":\"204,6,234,57\"}]"}

Review

The greater the angle \(\theta_{\mathrm{slip}}\) beyond which the box begins to slide, the greater the value of tan \(\theta_{\mathrm{slip}}\) and hence the greater the coefficient of static friction must be to provide the necessary friction force. Note that Equation 5-5 does \(\textit{not}\) involve the weight of the block. A plastic block on a wooden ramp will begin to slide at the same angle \(\theta\) regardless of its weight.