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- 2 A peron of mass w stands e the outer edge of a freely notating borisoal disk. The disk in hollow at the center, in which dhe inner and outer adius of the disk is R/2 and R, respectively, and the mass of the disk in M. The disk and the person are initialy ing wih angalar velocity Assumed that the size of the person is negligible comparnd with the disk aWhat is the total notational inertia of the disk and the penon in tems of m, M, and R(when she is standing at the outer edge)? (4 poinns) Refer o Table I sbout the outional inertia of s wolid disk). b. If the person walka from the outer edge m the inner edge, what is the new angular velociry of the penon in R/2 terms of a, M, R and a 3 point) c What is the change in kinetic energy of the penon+ disk? If it increases, explain why (even there isa't any Figure1 external work done on the systom). 3 poinn)Q 3 : of the forces system a bout point o in the figure below . Determine the resultant moment F. S00N m VP= 400N100 mm to 250 mm If the moment of the force P and the tension B pin P=400N 70 Tco about the is equal to Zero. Find the tension Teo. TCD Ane Tco = 183-5 N. %3D 25
- why is the x component of fbe not taken in the moment calculation at a? the x componebt is under the beam which not throught the line of action at aA Small pickup truck that has a caliper shell slowly coasts toward a red light with negligible friction. Two dogs in the back of the truck are moving and making various inelastic collisions with each other and the walls. What is the effect of the dogs on the motion of the center of mass of the system (truck plus entire load)? What is their effect on the motion of the truck?Q9c. For the beam below, the point loads and distances are as follows: F1 = 11.25 kN, F2 = 11.25 kN and F3 = 4.50 kN L1=2.25 m, L2= 4.50 m, L3 = 4.50 m and L4 2.25 m Determine the bending moment at D. Give your answer in kilonewton metres (kNm) to two decimal places. F1 F2 F3 LT 12 L3 14 D. Rg
- Determine the magnitude and direction of the moment of 400N force using the scalar method about each of the following axes: a) AB b)CD c) BF d) Dh e) BD f) express the moment of 400N force about axis AB in vector form90% 1 / 1 A 400 kg satellite has been placedin a circular orbrt 1500 km above the surface of the earth. The dceleration Of gravity at ths elevation is 6.43 m/s.. Deermine the linear momentum of the satellite. knowing thatiN orbital speed is 25.6x10' km/hanswer the speed of the defendant's car, in m/s. Plaintiff's speed: 15.0 m/s Skidmark angle: 58o Both car masses are the same. The plaintiff's car was going eastbound, while the defendant's car was going northbound. They collided and skidded together. The angle is the angle from the east direction.
- HW1.4. 2D Moment resultant Two forces lying in the x-y plane are defined by their magnitudes and direction angles, as shown in the figure below. Force F₁ has a magnitude F₁ = 360 N, an angle 0₁ = 109°, and acts at point A (310, 0) mm. Force F₂ has a magnitude F₂ = 270 N, an angle 02 = 56°, and acts at point B = (0,385) mm. Determine the total moment about point O due to these two forces. Remember to follow the standard sign convention for clockwise (-) and counter-clockwise (+) moments. y B 10 02 F₂ F₁ A 0₁ X TEGINGENHow do he do the v impact section part at the bottom? How did he get 9.25 m/s @21 ahQ4: For the forces system in figure if the resultant moment aboul point A is equal to (Zero) find magnit ude of the force P. the O. 2 Q = 65 o N 1o2 ml