STRENGTH OF MATERIAL
Compare the mechanical properties of a steel cable, made by twisting many thin wires together, with those
of a solid steel rod of the same diameter. What advantages does each have?
Practice problems : Fluid Mechanics
QUESTION I (I took this question out)
The gauge pressure at the bottom of a cylinder of liquid is 0.4atm . The liquid is poured into another
Practice problems : Rotation
To maximize the moment of inertia of a flywheel while minimizing its weight, what shape and distribution of mass
should it have? Explain.
Practice problems : Structures
PRACTICE PROBLEMS: STRUCTURES
What are the zero force members?
The structures below are called trusses and have a pin support an
Practice problems : Equilibrium
PRACTICE PROBLEMS: EQUILIBRIUM
Torque on the right leg: We want to find the magnitude and tension in the
hip abductor muscle T shown in the figure. The direction is given.
SOLUTIONS PROBLEM SET 5
NEWTONS LAWS WITH CIRCULAR MOTION; TORQUE
the radius of rotation is
R = 1.252 12 = 0.75m
= 0.8 and sin =
Here cos =
NYA PROBLEM SET # 5
Newtons Laws with Circular Motion; Torque
A 4 kg block is attached to a vertical
rod by means of two strings of length
1.25 m each. When the system rotates
about the axis of the rod, the strings are
extended as in the diagram.
NYA PROBLEM SET # 4
Newtons Laws; Friction
A rifle bullet with mass 2 grams, traveling with a speed of 3,600 cm/s, strikes a
block of soft wood and penetrates to a depth of 10 cm before coming to rest.
How long does it take the bullet to stop?
SOLUTIONS PROBLEM SET 3
NON-UNIFORM CIRCULAR MOTION
v. = 90kml h = 901000m = 25.0ml s
vI = 50kml h = 13.9ml s
a = ~ v = 13.9 - 25.0 = -0.7 4m I S2
the magnitude of the centripetal (radial) acceleration when v = Vf = 50kmlh is
A car is moving along an oval track that is
tilted or banked. The angle of the incline is 10.
Here is a close up for the car
at a single instant in time.
The car moves in a horizontal circle, denoted by the dashed red
line, meaning it stays a
In this experiment the objective was to have a very small percent error between the total initial
momentum and the total final momentum, because theoretically the momentum should be
conserved in a frictionless collision. However, our results we
The purpose of this lab was to replicate the human arm through the use of levers, weights and
strings. Our goal was to determine whether the human arm was designed for speed or for
strength. This was accomplished by comparing the linear veloc
In the first part of this lab, the acceleration vectors were obtained by subtracting
displacement vectors (x) and dividing by (t)2.
From the 5th spark to the 15th spark, the acceleration was 73.45 cm/s2 and from the 10th to
the 20th spark the acc
Newtons second law was verified experimentally by using a glider on a frictionless air track, which was
pulled by hanging masses. The acceleration was caused by these masses pulling on the glider and was
calculated using a computer program. When
The purpose of this experiment was to verify Newtons second law; F=ma. This law can be applied to
uniform circular motion. The centripetal force is
By plotting the centripetal force vs. the centripetal acceleration, the slope should equal the mas
Velocity and position using slopes and areas
By: Scott Harvey & Hudson Danielis-Garzon
Physics NYA; George Ostojic
Date experiment performed: August 27, 2010
Date Submitted: September 3, 2010
After plotting the data from table 1, the pos
Based on our graph, it is clear that the range of the ball increases as the height of launch
increases, due to the acceleration of gravity. We originally thought there would be a direct
linear relation between R and h. It turned out to be simil
Newtons second law is Fnet=Mtotal a.
Therefore a= Fnet /Mtotal
For the atwood machine, Fnet is also equal to the difference in weights : (M)g
Mtotal is also equal to 2M + M
This experiment examined the relationship between acceleration
The objective of this lab was to experimentally determine the resultant of several vector
forces. This was obtained by finding the balancing force (equilibrant) of the weights and
changing its direction by 180 degrees, since the equilibrant is op
203-DDC-05 ASTROPHYSICS, sec. 02
Saturn is the second largest planet in the solar system, right behind Jupiter, and
ranked sixth in the distance to the sun. Saturns largest moon, Titan,