ME 152 B Homework 3 Solutions
Boundary layers and flow about immersed bodies
Problem 1: Modeling airfoil performance using Xfoil
Part (a): Running Xfoil for an angle of attack of 5 degrees.
There are small differences in the two sets of curves for the pre
ME 163 Homework #4
Due date: Friday 02/24/2017
Problem 1 (20 points)
The unicyclist shown in Figure 1 can approximately be modeled as a spring-mass system (m, k).
Figure 1: The unicyclist as a spring-mass system
(a) The road she is travelling on has a sin
ME 163 Homework #7
Due date: Friday 03/17/2017
Problem 1 (20 points)
A string of length l and mass per unit length is under tension T with the left end fixed and
the right end attached to a spring-mass system (k-m) as shown in Figure 1.
Determine the equa
ME 163 Homework #6
Due date: Friday 03/10/2017
Problem 1 (20 points)
Let x be the vertical displacement of the center of mass C of the uniform bar shown in Figure
1 and its angle of rotation about C.
(a) Determine the natural frequencies and mode shapes o
ME 163 Homework #5
Due date: Friday 03/03/2017
Problem 1 (30 points)
An undamped spring-mass system (m, k) slides down a smooth inclined plane making angle
with the horizontal, as shown in Figure 1. Determine the time elapsed from first contact of the
sp
ME 163 Midterm
Tuesday 02/14/2017
12:30 - 1:45 pm
Open book exam, use of calculator is permitted
Problem 1 (25 points)
A chronograph is to be operated by a pendulum of length L and period of 2 s, as shown in the
figure. A platinum wire attached to the mas
ME 163 Homework #2
Due date: Thursday 02/02/2017
Problem 1 (15 points)
As a (actually fairly stupid) practical joke, youve put some fast-acting glue in your friends
slingshot as in Figure 1. Your friend puts a mass of 60 g in the slingshot, pulls it back
ME 163 Homework #1
Due date: Thursday 01/26/2017
Problem 1 (10 points)
Figure 1 shows a Ferris wheel at a carnival. Assume that the sun is directly overhead and that
the wheel has a radius of 15 m. It takes 3 minutes to complete a single revolution.
(a) D
ME 163 Homework #0
Due date: Thursday 01/19/2017
NOTE: We will use this to understand the level of the background knowledge of the class. Thus,
please put your best effort into solving these problems without anyones help, using the best
knowledge you have
Jordan Pine
Christian Rodriguez
ME104 Th 2-5 Lab
TA: Maurice Filo
October 30, 2014
LAB 3: FREQUENCY RESPONSE
ABSTRACT:
DISCUSSION:
This lab focused on the frequency response of low-pass, high-pass, and band pass
filters. The first circuit to be designed w
Jordan Pine
Chris Rodriguez
ME104, Th 2-5 Lab
TA: Maurice Filo
October 16, 2014
LAB 1: INTRO TO LABVIEW
ABSTRACT:
In this lab, the team was introduced to LabVIEW software and tested the accuracy of
the software compared to an oscilloscope. A function gene
Bitch ass Jordan Pine
Christian Rodriguez
ME104 Th 2-5 Lab
TA: Maurice Filo
November 13, 2014
LAB 5: CHARACTERIZATION OF A PM MOTOR
ABSTRACT:
In this lab, brushed permanent magnet motors were studied to create a data sheet
for the motor and study how diff
Jordan Pine
Christian Rodriguez
ME 104 Th 2-5 Lab
TA: Maurice Filo
October 23, 2014
LAB 2: DATA ACQUISITION
ABSTRACT:
In this lab, the team studied the affect of impedances on electrical signals used to
measure physical quantities. The team made two notew
Lab 4
Abstract: In this lab, the concept of the strain gauge with the implementation of a wheatstone
bridge, differential op-amps and non-inverting op-amp is explored. The wheatstone bridge was
constructed with a strain gauge to measure the amount of stra
INTRODUCTION TO
COMSOL Multiphysics
Introduction to COMSOL Multiphysics
19982016 COMSOL
Protected by U.S. Patents listed on www.comsol.com/patents, and U.S. Patents 7,519,518; 7,596,474; 7,623,991;
8,457,932; 8,954,302; 9,098,106; 9,146,652; and 9,323,50
ME141A Winter 2017
Homework #2, DUE 1/30
Subject: MEMS Mechanics
Problem #1: A silicon cantilever beam is 300 m long, 100 m wide, and 6 m
thick. Silicons Modulus of Elasticity is 110 GPa; its density is 2330 kg
ME125EM Finite Elements Analysis of Heat Transfer and Fluid Flow
UCSB Winter 2017 E. Matthys
Homework Assignment #1
Objective: to give you a feel for what COMSOL can do and to get started with the Heat Transfer Module.
This exercise, together with the on
5.7) A silicon cantilever beam is 300 m long, 100 m wide and 6 m thick. Silicons modulus
3
of elasticity is 110 GPa; its density is 2330 kg/m . (a) Determine the spring constant, k, of this
beam. (b) Determine the natural frequency in radians per second.
2.10) The micro-mirror shown in Figure 2.8 is used for redirecting light in an optical
communication system. The torque needed to spin it on the y axis is directly proportional to its
mass moment of inertia, Iyy:
I yy =
1
htw3
12
Here is the density of th
ME125EM Finite Elements Analysis of Heat Transfer and Fluid FLow UCSB
Winter 2017 E. Matthys
Homework Assignment #2
Objective: to continue learning about COMSOL, this time for unsteady-state conduction problems. Also,
be introduced to how to handle step
ME125EM Finite Elements Analysis of Heat Transfer and Fluid FLow
UCSB Winter 2017 E. Matthys
Homework Assignment #3
Upload the report on Gauchospace as a pdf (only!) file by the stated deadline and use H3 Lastname Firstname.pdf as
filename. Upload also t
ME 141A
Intro to MEMS/NEMS
Due: 1/16/2017
Homework #1 Due 1/16/2017
*Whenever possible, please draw a box around your answer: one box for the
answer in terms of the algebraic variables before you plug any numbers in, and
one box for the numeric answer. Al
HW #7
ME104
Due Friday 11/20 at 5pm
(in box outside of 2243 Eng II)
Problems from Text on Temperature and Vibration Sensing:
9.21, 9.23, 9.27 and 9.28.