A. A car's body has mass 100 slugs. This mass is supported by the car's 4 shock absorbers. The shock absorbers are identical vertical linear springs. 1. Complete a FBD of the car's body (this would not include the car's wheels, axels etc. just the car's body) ii. Each spring is compressed 1.25 inches. Determine the spring "k" value. Answer: 644 lb/inch. iii. Find the compression of each spring if 4 people, each with mass 6 slugs, get into the car, Answer: 1.55"

Consider why a wheelbarrow is helpful to move heavy stuff. Below is an example wheelbarrow loaded with 15 kg of stuff. 9. 1.25 m Center of mass € 0.45 m of body and handle Fx Fy 1.20 m 0.55 m 0.30 m The wheelbarrow has a single wheel of mass 2.5 kg, radius of 0.30 m. The body of the wheelbarrow and the stuff has a combine mass of 17.5 kg acting at the center of mass shown. The horizontal and vertical components of the force that we push with is named F and Fy, respectively. a. Draw separate free body diagrams for the wheel and for the wheelbarrow body. b. What force F and F, do you have to apply to the wheelbarrow to accelerate the wheelbarrow at 1.0 m/s2 to the right? (Hint: The body of the wheelbarrow does not rotate.)

Assume that the proportions of a 85-kg person are the same as those in the table below. Calculate the mass of one leg of the person. TABLE 7-1 Center of Mass of Parts of Typical Human Body, given as % (full height and mass = 100 units) Distance of Hinge Points from Floor (%) Hinge Points (•) (Joints) Center of Mass (x) (% Height Above Floor) Percent Mass Base of skull on spine dbow 62.2%. wrist 46.2%* Нead Trunk and neck 93.5% 71.196 71.7% 6.9% 46.1% 6.6% 91.2% 81.2% Shoulder joint Upper arms Lower arms 55.3% 4.2% 52.1% Hip joint Hands 43.1% 1.7% Upper legs (thighs) 42.5% 21.5% 28.5% Knee joint Lower legs 18.2% 9.6% 4.0% Ankle joint 3.4% 100.0% Feet 1.8% Body CM - 58.05% "For arm hanging vertically. Express your answer to two significant figures and include the appropriate units. mg 14.66 Submit Previous Answers Bequest.Answer

Fluid

P1.) A closed cylindrical tank 1.5 m in diameter and 4 m long is completely filled with gasoline (sp.gr. = 0.82) and accelerated horizontally at 3 m/s². Find the total force acting at the rear wall and at the front wall of the tank. Find also the accelerating force on the fluid mass. Answer: 10.66 kN and F = 17.36 kN Subject: Fluid Mechanic Lesson: Relative Equilibrium of Liquids Fundamentals of Fluid Flow