ME104-Midterm1-Solns

# ME104-Midterm1-Solns - ME 104 Engineering Mechanics II...

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

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.

Unformatted text preview: ME 104: Engineering Mechanics II Spring Semester 2011 Department of Mechanical Engineering University of California at Berkeley Professor Oliver M. O’Reilly First Midterm Examination Closed Books and Closed Notes Question 1 A Planar Pendulum ( 25 Points) As shown in Figure 1, a particle of mass m is attached to a fixed point O by a linearly elastic spring. The spring has a stiffness K and an unstretched length L . The motion of the particle is on the E x- E y plane. m O E x E y g linear spring Figure 1: Schematic of a particle of mass m which is attached to a fixed point O by a linearly elastic spring. A vertical gravitational force- mg E y acts on the particle. (a) Starting from the standard representations for the position vector r = x E x + y E y = r e r , (1) establish expressions for the velocity v and acceleration a vectors of the particle. In your solution, it is not necessary to derive the intermediate results ˙ e r = ˙ θ e θ and ˙ e θ =- ˙ θ e r ....
View Full Document

{[ snackBarMessage ]}

### Page1 / 6

ME104-Midterm1-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