Physics · Laws of Motion
A body of mass m is kept on a rough horizontal surface (coefficient of static friction = μ). A horizontal force is applied on the body, but it does not move. The magnitude of the resultant contact force (&vec;R) exerted by the surface on the object (the resultant of normal reaction and frictional force) satisfies which condition?
- 1|&vec;R| = μmg
- 2|&vec;R| = mg + μmg
- 3|&vec;R| = mg
- 4|&vec;R| ≤ mg√(1 + μ2)✓
Correct answer
|&vec;R| ≤ mg√(1 + μ2)
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