Ch_8_homeworks_updated - 15-30Chapter 15: Homework...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 15-30Chapter 15: Homework Problems8.1 Lets start with a simple problem. Determining the forces on the front and rear tiresof car that weighs 2400 lbs. You may assume thata= 2.15ft.andb= 2.65ft.. Whaterror do you obtain if you assume that the car is a point mass and all four wheels carrythe same load?abChapter 15: Homework Problems15-318.2 In this case, we will assume that the truck weighs 3900 lbs. and the load it is carryingweighs 750 lbs. Does the truck tip over? You may assume,a= 0.45ft.,b= 3.1ft., andc= 2.6ft..abcGWAB15-32Chapter 15: Homework Problems8.3 Shown below is a novel van hatch mechanism being closed. As a design exercise, deter-mine the necessary force in each of the two hydraulic struts AC if the downward force F= 10 lbs. The mass center of the 90 lb. door is 1.5 inches directly below point A. Treatthe problem as two-dimensional. The dimensions,a,b,c,anddare 2.5 in., 9 in., 3.5 ft,and 3.7 ft., respectively. The horizontal distance betweenFand point A is 7 in.abcdABCFChapter 15: Homework Problems15-338.4 If the force applied to the brakes is 100 N, and the dimensions,a,b,c,d, andeare 6 cm,3 cm, 4 cm, 2.8 cm, and 4 cm, respectively. The angleLis 25o. If the spring constant(link AB) is 10,000 N/m, how much deflection occurs at point B when the brakes areapplied. 1 a b c d e F A B C D 15-34Chapter 15: Homework Problems8.5 A portion of the shifter mechanism of a manual car transmission is shown in the figure.For the 3.75 lb. force exerted on the shift knob (it makes an angle with the horizontalof 30o, determine the corresponding forceF2exerted by the shift link BC on the trans-mission (not shown). Neglect friction in the ball-and-socket joint at D, in the joint atB, and in the slip tube near support C. Note that a soft rubber bushing at C allows theslip tube to self-align with link BC. The dimensionsa,b,c,d,e,andfare 8 in., 0.5 in.,1.25 in., 7.25 in., 3.8 in., and 1 in., respectively....
View Full Document

This note was uploaded on 12/21/2011 for the course ME 270 taught by Professor Murphy during the Fall '08 term at Purdue University-West Lafayette.

Page1 / 13

Ch_8_homeworks_updated - 15-30Chapter 15: Homework...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online