ME104-Midterm2-Solns

# ME104-Midterm2-Solns - ME 104 Engineering Mechanics II...

This preview shows pages 1–2. Sign up to view the full content.

ME 104: Engineering Mechanics II Spring Semester 2011 Department of Mechanical Engineering University of California at Berkeley Professor Oliver M. O’Reilly Second Midterm Examination Wednesday April 6 2011 Closed Books and Closed Notes Question 1 Planar Motion of a System of Two Particles (20 Points) As shown in Figure 1, a particle of mass m 1 is at rest and is attached to a ±xed point O by a linear spring of sti²ness K and unstretched length L 0 . At time t = 0, a particle of mass m 2 traveling with a velocity vector v 0 E x impacts the particle of mass m 1 . After the collision both particles adhere to each other, and can be considered as a particle of mass m 1 + m 2 . m 1 + m 2 O O m 2 m 1 (a) (b) v 0 E x E x E x E y E y g g linear spring Figure 1: A system of two particles: (a) Prior to impact at t = 0, and (b) following the impact. (a) (4 Points) Starting from the representation r 1 = r e r , (1) where e r is a unit vector pointing from O along the spring to m 1 , establish representations for

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 ]}

### Page1 / 5

ME104-Midterm2-Solns - ME 104 Engineering Mechanics II...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online