A block of mass M rests on a rough horizontal surface as shown. Coefficient of friction…
Physics · JEE Main · NTA Exams — Laws of Motion
A block of mass M rests on a rough horizontal surface as shown. Coefficient of friction between the block and the surface is μ. A force F = Mg acting at angle \(\theta\) with the vertical side of the block pulls it. In which of the following cases the block can be pulled along the surface:
- \(\tan \theta \geq \mu\)
- \(\tan \left(\frac{\theta}{2}\right) \geq \mu\)
- \(\cot \theta \geq \mu\)
- \(\cot \left(\frac{\theta}{2}\right) \geq \mu\)
Answer
(D) ( 2 )
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