17. Under static or constant velocity conditions, the wheelchair will tip back- wards if the vertical projection of the combined center of gravity (CG) of the wheelchair and occupant falls behind the point of contact between the rear wheels and the ramp surfaces. As shown in Figure 5.12, the rearward tipover angle (0,) is determined by the horizontal distance (d₁) and the vertical distance (d₂) between CG and the wheelchair's rear axles. a) Using static analysis, derive the equation relating 0,, d₁, and d2. b) Using the platform approach depicted in Figure 5.7, suggest a method for determining d₁. c) Assuming that d₁ and d2 averaged 13 cm and 24 cm, respectively, for able-bodied individuals, what would 0, be? d) How would d₁ and d₂ change if the wheelchair occupant leaned forward instead of sitting back against the chair? How would 0, be affected by this postural shift? CG 0₁ kost 30.5cm

Q: The set of concurrent forces F₁ = 50 N, F₂ = 50 N, and F3 60 N are applied at particle A. The angles…

A: Given:To find:Resultant of the forces at A.

Q: A light fixture of negligible mass, has three applied forces acting on it as show |F,| = 4 kN 1.2 m…

A:

Q: You may consider the biceps muscles tension to be completely canceled at the shoulder to which they…

A: Consider the free body diagram shown below for the given arm.

Q: Consider a rectangular plate of mass 7 kg. Calculate I. Assume a = 3.7 m, and b = 1.3 m. %3!

A: Product of Inertia Ixy  =∫dIxy  = ∫Ax y dAx = centroidal X coordinate  of elementy = centroidal Y…

Q: Determine the magnitude of the moment about A ( lb in) that produces the 125 lb force necessary to…

A: According to the given dataWe need to findmoment due to force to open the window.

Q: = Your friend has joined the e-vehicle movement by outfitting their road bike with an electric motor…

A:

Q: The method of locating the center of gravity of a mass or an area is based on the method of…

A:

Q: . The piece shown is made by joining a solid rectangular parallelepiped with given density pp and a…

A:

Q: 11. Marianna is pulling her daughter in a toboggan and is exerting a force of 60 N, acting at 46° to…

A:

Q: Express and identify the resultant of the two forces and one couple shown acting on the shaft angled…

A:

Q: 6. The 10 ft by 5 ft rectangular plat (1 ft by 1 ft squares) shown is horizontal (top view given)…

A: The plate and the balls are illustrated as: The mass of the objects are:Plate = 0.80 lbs.Ball A =…

Q: By drawing a free-body diagram for the ring at A, determine the maximum weight W that can be…

A: Maximum tension that can be supported by cable is 600lb

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.