Answers must be in S.I Units. A specific spring is attached to a 6.613 Ibs. smooth collar and the collar is released from rest at A, determine the speed of the collar when it reaches B. The spring has a stiffness k (stiffness coefficient) and an unstretched length of 0.5 meters. To solve the problem, please neglect the size of the collar. = 180 N/m

A box with mass m = 2.75 kg rests on the top of a table. The coefficient of static friction between the box and the table is μs = 0.71 and the coefficient of kinetic friction is μk = 0.34. Write an expression for Fm the minimum force required to produce movement of the box on the top of the table. Solve numerically for the magnitude of the force Fm in Newtons. Write an expression for a, the box's acceleration, after it begins moving. (Assume the minimum force, Fm, continues to be applied.) Solve numerically for the acceleration, a in m/s2.

Q24. The buoyancy force on the 580-kg balloon is F = 6 kN, and the air force acting {C₁.ti-C₂. √t j N, when t is time in on the balloon is Fair seconds, constants C₁ = 24 and C₂ = 240. If the balloon starts from rest, determine its speed after 28 seconds. Neglect the size of the balloon but don't neglect its weight. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper SI unit. Take g = 9.81 m/s². Fa air Your Answer: Answer = F = 6 kN units