Consider a crate of mass 5.0 kgresting on the floor. A man pushing along a line making an angle of 15° with the plane of the floor is overcoming the frictional force (coefficient µ_k=0.45) and sliding the crate with an acceleration of 1.0 m/s². The minimum force necessary to produce this motion is A) 15 N. B) 23 N. C) 32 N. D) Hold it! Insufficient information is given for an unambiguous response.

Question

Quizplus · Accepted Answer

The minimum force necessary can be calculated using the equation: F = ma + μkmg / (cosθ + μksinθ). Substituting the given values, F = 5 * 1 + 0.45 * 5 * 9.8 / (cos15° + 0.45sin15°) ≈ 32 N.

Consider a Crate of Mass 5