# HW3 - HOMEWORK PROBLEMS Week 3 Due Friday 30 September 1 In...

This preview shows pages 1–4. Sign up to view the full content.

HOMEWORK PROBLEMS Week 3: Due Friday 30 September 1. In Figure 1, the disk is homogeneous and has a mass of 5 kg and the bar AB can be regarded as weightless. If the coefficient of friction at C is 0.2, what is the maximum force P that can be applied without slip. 200 200 120 140 A B C P 30 o all dimensions in mm Figure 1 1

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

View Full Document
2. A small rectangular block rests without slipping on a plane inclined at 30 o to the horizontal. A horizontal force P is now applied to the block in the direction perpendicular to the line of greatest slope, as shown in Figure 2, and is gradually increased from zero. It is observed that the block starts to slide when P = 0 . 2 W where W is the weight of the block. What is the coefficient of friction between the block and the plane? P o 30 Figure 2 2
3. Figure 3 shows a manual automotive jack. Rotation of the screw at D causes C to be pulled towards D and hence AB to move upwards against the vehicle weight P = 3 kN. The dimensions AB and EF are both L = 100 mm and the diagonal members AD , BC , CF , DE

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern