Homework 11, Phy 2060
.
1. The buoyant force on an object submerged in water is the volume of water
displaced times its mass density times the acceleration due to gravity
Buoyancy Force = Vol * * g (Archimedes principle). A cylindrical object, cross
secti
PH! 959670 5 h 100% - Exam l Solutvhn
1. A mass m is thrown vertically upward from height y = 0 with an initial velocity v0.
Between the time of its release and the time it returns to y = 0, the mass is acted on by
two forces: its weight mg, and a drag fo
PHV 106:0 SPRING}- ams EXM :2. SOLDHW
1. Two masses, m1 and m2, are suspended from the ceiling using two
ideal strings [L for left, and R for right) and three massless,
frictionless pulleys. Consider the motion during a short period
after the system is
qu 1060 spams loo? 6xnm 3
1. (a) A dogs toy consists of two uniform rubber spheres connected by a
uniform rubber cylinder, whose axis lies along the line between the
balls centers (see gure). The cylinders length is much greater than
its diameter. The s
1.
39w: :1er g m 900-? ~m Elwm Saw
(a) P and R mark the highest and Q
the lowest positions of a SOD-kg boy
swinging as illustrated in the gure.
What is the tension in the rope at
point Q?
1. 250N
. 525N
. 7 x 102 N
\/
_ . 1.1 x103N
minute
. None of the ab
"Vi-H 9.02:0 ?o\|l 3:309 «Exam 3
1. (a) A person pulls a block across a rough horizontal surface at a constant speed by
applying a force F. The arrows in the diagram below correctly indicate the
[map 5 , directions, but not necessarily the magnitudes of t
PHUI Fa 100C? ~ Exam 2
1. A muon of mass 1.88 X 1028 kg enters the Earths atmosphere from outer space with
a momentum 1.39 X 1019 kg-m/s. What is the muons speed in m/s?
Lkiwfj W nonodohmshb 0~\V\'\W\ 0? \mzar thm
P := WV
We, v . IO (1 '60 rvtg
m ' '-
Homework 12, Phy 2060
.
1. Relative velocities.
a. Two spaceships are approaching Callisto, a moon of Jupiter, from opposite
directions. Assume Callisto is the at-rest, S frame. If the spaceship (A)
approaching Callisto from the x direction is moving at +
MAC 2312, Calculus 2
Lecture Topics and Homework Assignments
You should read the textbook sections covered in each days lecture before class.
After each lecture, review your notes and the text to make sure you understand
the main concepts before you start
Homework 1
1a. An airplane is landing on the runway on St. Thomas in the Virgin Islands. If the
landing speed is 140 mph and the runway is 1100 m long (there is a mountain at the
end of the runway on St. Thomas), assuming constant deceleration what
decele
Homework 7, Phy 2060
1. In the picture above, the cube has side L, total mass M, and is uniform. A force F
is applied to the middle of an upper edge as shown. If the bottom of the cube is kept
from sliding by sufficient frictional force, how much force F
Homework 4
1. A building is on fire and the occupant of a room ties together some bed sheets,
attaches them to something immovable in the room and throws the bedsheet rope
out the window. The person weighs 800 N and the bed sheets can only hold a force
of
Homework 6, Phy 2060
1. A spaceship pilot wants to do a quick burn of the propulsion rocket to change
velocity by 10 m/s. Assume that the starting mass of the spaceship is 3 105 kg and
that the fuel is used at the rate of 100 kg/s with an exhaust velocity
Homework 5, Phy 2060
1. An ice skater is stationary on an effectively frictionless surface. The skater has a
mass, including the contents of 2 backpacks, each containing twenty 50 gram
snowballs for a total of 2 times 1 kg, of 60 kg.
a. The skater throws
PHY2060
Units of Force N (kgm/s2)
All answers: 3 sig figs unless otherwise stated
1. Tarzan needs to get from point A (on one side of the river which is flowing left to right at
2 m/s) to point B (directly across the river, which is 100 m on the far bank
PHH lobo Fm 1005 Emm 1 Sowho'n
1. The position of a particle moving along the ac axis is given by m = a + bt - ct2, Where
a, b, and c are positive constants.
[5 Pang) (a) Find the velocity as a function of time.
L3 Vow-fo1 (b) What is the average veloci
Homework 6 Physics 2060
Jianyi Gao
1. A spaceship pilot wants to do a quick burn of the propulsion rocket to change velocity
by 10 m/s. Assume that the starting mass of the spaceship is 3 105 kg and that the fuel is
used at the rate of 100 kg/s with an ex
Homework #2 - 2060
1. Person in an elevator on the earth where g=9.8 m/s2.
If the person stands on a weighing scale when the elevator
is motionless, he/she weighs 490 N.
a. Now the elevator moves up the elevator shaft at a
constant velocity of 3 m/s. What
1. A particle of mass m is subjected to just three constant forces F]-
(j = 1, 2, 3), oriented along the directions shown in the gure.
Starting at rest, the particle moves off along the straight path
indicated by the dashed line. Let Wj be the work done b