A 66.0-kg crate rests on a level floor at a shipping dock. The coefficients of s

Question

A 66.0-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.760 and 0.440 respectively. (a) What horizontal pushing force is required to just start the crate moving? (b) What horizontal pushing force is required to slide the crate across the dock at a constant speed? A cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.37. Suddenly the plane accelerates forward, its altitude remaining constant. What is the maximum acceleration that the plane can have without the cup sliding backward on the table? m/s^2

Explanation / Answer

A) Force required = usmg

= 0.76*66*9.8 = 491.57 N

B) Force required = ukmg

= 0.44*66*9.8 = 284.6 N

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.