# Exam2Sol - 7.5kg 6.25x104kg 25o 0.25m/s Fpush 10.0kg 13o...

This preview shows pages 1–3. Sign up to view the full content.

2 5 .0 ο m 7.5kg 25 o F push μ s = 0.300 μ k = 0.150 n f W = mg = 73.5N 10.0kg 5.00kg F push 3.00kg 13 o mg F s r 6.25x10 4 kg 0.25m/s 7.65x10 4 kg 0.30m/s 6.25x10 4 kg 7.65x10 4 kg v f Introductory Physics I PHYS 2211-160 Exam #2 Chapters 5-10 Name____ Solutions ______________ Show all your work on these sheets, and make sure to box your answers! For Questions #1 – 6, consider a 15.0kg block initially at rest on an incline as shown in the diagram. There is a coefficient of static friction of 0.600 between the block and the surface, and a coefficient of kinetic friction of 0.100 between the block and the surface. 1. (5 points) What is the magnitude of the weight acting on the block? a) 147N b) 133N c) 88.2N d) 79.9N e) 62.1N W = mg = (15.0kg) (9.80m/s 2 ) = 147N f) 37.3N g) 14.7N h) 13.3N i) 6.21N j) 0 2. (5 points) What is the magnitude of the normal force acting on the block?

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