ssm A 54.0 kg crate rests on a level floor at a shippingdock. The coefficients o
ID: 1759702 • Letter: S
Question
ssm A 54.0 kg crate rests on a level floor at a shippingdock. The coefficients of static and kinetic friction are0.740 and 0.480,respectively. (a) What horizontal pushing force is requiredto just start the crate moving?1 N
(b) What horizontal pushing force is required to slide the crateacross the dock at a constant speed?
2 N
A Mercedes-Benz 300SL (m = 1750kg) is parked on a road that rises 15° above the horizontal. (a) What is the magnitude of the normalforce?
1 N
(b) What is the static frictional force that the ground exerts onthe tires?
2 N (a) What horizontal pushing force is requiredto just start the crate moving?
1 N
(b) What horizontal pushing force is required to slide the crateacross the dock at a constant speed?
2 N
(a) What is the magnitude of the normalforce?
1 N
(b) What is the static frictional force that the ground exerts onthe tires?
2 N
Explanation / Answer
a) fs = usmg = 0.740 * 54kg *9.8m/s2 = 391.6N b) F = ukmg = 0.480 * 54kg * 9.8m/s2 =254.01N c) N = mgcos = 1750kg *9.8m/s2 * cos15 = 16565N d) fs = usmgcos =s*1750kg * 9.8m/s2 * cos15 =s * 16565N = .............N
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.