APHY 211: Essentials of Physics I
Fall 2011
SYLLABUS
Prerequisites: Grade C or better in AMTH 141
Instructor: Dr. Stelios Kapranidis
Office: 321 SBDG, Tel.: 648-6851x3466
Office Hours: M,W 12:00-1:00, T, Th 11:15-12:15 and by appointment
Time, Place: Lect
HW:
1)
Given two vectors a = 3.3i -3.2j and b =6.6i+8.6j
find the magnitude (in m) of the vector a.
Find the direction (in = deg) of the vector a.
Find the magnitude of the vector b.
Find the magnitude of the vector b.
Find the magnitude of the vector a+b
A particle leaves the origin with an initial velocity v = 2.16i , in
m/s. It experiences a constant acceleration
a = -1.00i -0.50j , in m/s2.
What is the velocity of the particle when it reaches its maximum x
coordinate? i-component of velocity? 0.00 m/s
HW 3
1)
A car traveling at 69 km/h hits a bridge abutment. A passenger in the car moves forward a
distance of 57 cm (with respect to the road) while being brought to rest by an inflated air bag.
What magnitude of force (assumed constant) acts on the passe
1) The coefficient of static friction between Teflon and scrambled
eggs is about 0.035.
What is the smallest angle from the horizontal that will cause the
eggs to slide across the bottom of a Teflon-coated skillet?
2) In the figure a fastidious worker pus
HW 5
1)
A 50 kg block is pulled at a constant speed of 6.6 m/s across a
horizontal floor by an applied force of 138 N directed 37
above the horizontal. What is the rate at which the force does
work on the block?
2)
A 0.45 kg mass sliding on a horizontal f
HW 6
1)
A.
The string in the figure is L = 140.0 cm long, and the distance
d to the fixed peg at point P is 87.5 cm. When the initially
stationary ball is released with the string horizontal as shown,
it will swing along the dashed arc.
What is its speed
HW 7
1) A railroad
flatcar of weight 7840 N can roll without friction
along a straight horizontal track. Initially, a man of weight 596 N is
standing on the car, which is moving to the right with speed 25
m/s; see the figure.
What is the change in velocit