Q20. The 8-lb block A attains a velocity of 10 ft/s in 2 seconds, starting from rest. Block B has a weight of 6 lb. Determine the tension in the cord connecting the blocks. Neglect the weight and friction of the pulley. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 32.2 ft/s².

Q14. As shown in the image below, the 20-kg box is pulled up the inclined plane with a constant velocity of 4.7 m/s. If the coefficient of kinetic friction between the box and the inclined plane is µ = 0.1, determine the power of force F. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper SI unit. Take g = 9.81 m/s². F Your Answer: Answer 30° units

The amusement park ride consists of a 200-kg car and passenger that are traveling at 4.6 m/s along a circular path having a radius of 8 m. At t = 0, the cable OA is pulled in toward O at 0.5 m/s. (Figure 1) Figure Part A Determine the speed of the car when t = 4 s. Express your answer to three significant figures and include the appropriate units. V2 = Submit Part B O μA U1-2 = Value Request Answer Determine the work done to pull in the cable. Express your answer to three significant figures and include the appropriate units. ΜΑ Units Value ? Units ?

In the following problem please include a sketch of the problem, quantities given, quantities to be found, and boxed answer with units.

Q13. As shown in the image below, the force acting on the 23-kg box is F = (C.s) N, where constant C = 2 and s is displacement in m. If the box has initial velocity of 1.2 m/s when s = 0, determine the power of force Fwhen s = 2.7 m. The ground is smooth. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper Sl unit. S | s Your Answer: Answer units F

Two blocks are joined by an inextensible cable as shown. The mass of block A is 192.4 kg and the mass of block B is 260.3 kg. If the system is released from rest, determine the acceleration (in m/s2 ) of block B. Assume that the coefficient of friction between block A and the plane is μk = 0.22 and that the pulley is weightless and frictionless.   Round off only on the final answer expressed in 3 decimal places. Use g = 9.81 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

Q21. The 10-lb block A attains a velocity of 7 ft/s in 5 seconds, starting from rest. Block Bhas a weight of 9 lb. Determine the coefficient of kinetic friction between block A and the horizontal plane. Neglect the weight and friction of the pulley. Please pay attention: the numbers may change since they are randomized. Your answer must include 3 places after the decimal point. Take g = 32.2 ft/s². A Your Answer: Answer B

A block of mass m=1.64kg is released from rest at an unknown height h. The coefficient of friction between the block and the incline oriented at an angle of 0=56° is Uk=0.38. If the speed of the block v=7m/s when it leaves the inclined plane, determine the work done by the force of gravity. Take g =9.81m/s? and express your final result using one decimal place. m h т

A rocket runs out of fuel in the position shown and continues in unpowered flight above the atmosphere. If its velocity in this position was 567 mi/hr, calculate the maximum additional altitude h acquired and the corresponding time t to reach it. The gravitational acceleration during this phase of its flight is 30.0 ft/sec². Vertical 22% Answers: h = i t = Mc v = 567 mi/hr mi sec