MCQOPTIONS
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| 1. |
A block of mass 1 kg is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5. The magnitude of the force acting upwards at an angle of \[60{}^\circ \] from the horizontal that will just start the block moving is |
| A. | \[5\,N\] |
| B. | \[\frac{20}{2+\sqrt{3}}N\] |
| C. | \[\frac{20}{2-\sqrt{3}}N\] |
| D. | \[10\,N\] |
| Answer» C. \[\frac{20}{2-\sqrt{3}}N\] | |