203-nya_mechanics_exam_-_may_2006

# 203-nya_mechanics_exam_-_may_2006 - Student name Student ID...

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

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

View Full Document
Page 2 of 10 Part I: Long Answer Questions Part I: Please solve all six (6) problems . Show your reasoning to obtain full marks. If a formula is not on the formula sheet, it must be derived. 1. A 1 kg box slides on a vertical wall while being pushed at an angle of 30 ° as shown in the figure below. The coefficient of kinetic friction ( µ k ) between the box and the wall is 0.20. (a) Draw free-body diagrams for both upward and downward sliding possibilities. (b) If the applied force, F app has a magnitude of 12N, determine whether the box is sliding up or down the wall. Find the magnitude of the acceleration for this F app . (c) Suppose now that the box is sliding downward at constant speed. In this case, find the required magnitude of the applied force oriented as in the figure to produce these dynamics. 2. A ball is thrown toward a cliff of height h with a speed of 30 m/s and an angle of 60 degrees above the horizontal. It lands on the edge of the cliff 4.0 s later.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 10

203-nya_mechanics_exam_-_may_2006 - Student name Student ID...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online