2.66
IDENTIFY: Apply x x0 = v0 xt + 1 axt 2 to the motion of each train. A collision means the front of the passenger
2
train is at the same location as the caboose of the freight train at some common
Phyx 125-1, Quiz 4
Name _
1) A uniform disk with a mass of 8 kg is being acted
on by three forces as shown at right. The disk is fixed
to a frictionless axle at its center.
a) What is the angular acce
Phyx 125-1, Quiz 5
1) A very light bar (zero mass) of length L is attached to a wall by a
frictionless pivot, and is held in place by a cable attached to its end, as
shown at right. There is a 10 kg m
Phyx 125-1, Quiz 6
1) Jupiter has four large moons called the Galilean satellites, because Galileo was the first person to see
them. The table below contains some basic data. You may assume the orbits
Phyx 125-1, Quiz 7 Solutions
1) A pendulum is made of a long thin bar of length 0.8 m, attached to a
thin disk of radius 0.15 m. The center of the disk is 0.6 m from the upper
end of the bar. The disk
Experimental validation of Newtons kinematics equation in one-dimensional free fall
Emily Dial, Nicolas Chen, Julia Dierksheide
Introduction:
The goal of this lab was to verify that Isaac Newtons kine
Experimental validation of the independence of motion in two dimensions
Emily Dial, Nicolas Chen, Julia Dierksheide
Introduction:
The goal of this lab was to verify that the kinematic model of motion
Experimental determination of force, friction, and acceleration
Emily Dial, Nicolas Chen, Julia Dierksheide
Introduction:
The goal of this lab was to investigate various aspects of forces. This was do
Determining the relationship between resistance and the length and diameter of a resistor
Emily Dial, Nicolas Chen, Julia Dierksheide
Introduction:
The goal of this lab was to determine the relationsh
Phyx 125-1, Quiz 3, Solutions
1) A puck of mass 5 kg is sliding on a frictionless surface
at 2 m/s. It strikes a second, identical puck which is
initially stationary. Afterwards, the first puck moves
Phyx 125-1, Quiz 2
1) Two masses are connected by a cord on a
massless, frictionless pulley as shown at right.
The 5.7 kg mass has a coefficient of static friction
of 0.70 and a coefficient of sliding
Phyx 125-1, Quiz 1
1) In a circus stunt of lunatic daring, an
acrobat atop a 15 m platform is shot
from a cannon at v = 40 m/s and with an
angle of 55 relative to the horizontal.
At the same instant t
3.54
IDENTIFY: The equipment moves in projectile motion. The distance D is the horizontal range of the equipment
plus the distance the ship moves while the equipment is in the air.
SET UP: For the mot
3.29
IDENTIFY: Apply Eq. (3.30).
SET UP: T = 24 h .
4 2 (6.38 106 m)
= 0.034 m/s 2 = 3.4 103 g .
EXECUTE: (a) arad =
(24 h)(3600 s/h) 2
4 2 (6.38 106 m)
= 5070 s =1.4 h.
9.80 m/s 2
1
EVALUATE: arad is
4.37
IDENTIFY: If the box moves in the + x-direction it must have a y = 0, so
F
y
= 0.
The smallest force the child can exert and still
produce such motion is a force that makes the
y-components of al
5.81
IDENTIFY: Apply
F = ma to the point where the three wires join and also to one of the balls. By symmetry
the tension in each of the 35.0 cm wires is the same.
SET UP: The geometry of the situati
6.7
IDENTIFY: All forces are constant and each block moves in a straight line. so W = Fs cos . The only direction the
system can move at constant speed is for the 12.0 N block to descend and the 20.0
7.40
IDENTIFY: For the system of two blocks, only gravity does work. Apply Eq.(7.5).
SET UP: Call the blocks A and B, where A is the more massive one. v A1 = vB1 = 0 . Let y = 0 for each block to be
a
8.12
IDENTIFY: Apply Eq. 8.9 to relate the change in momentum of the momentum to the components of the average
force on it.
SET UP: Let +x be to the right and +y be upward.
EXECUTE: (a) J x = px = mv2
8.45
IDENTIFY: Eqs. 8.24 and 8.25 apply, with object A being the neutron.
SET UP: Let +x be the direction of the initial momentum of the neutron. The mass of a neutron is mn = 1.0 u .
m mB
1.0 u 2.0
Experimental verification of the path of motion for an irregular object
Emily Dial, Nicolas Chen, Julia Dierksheide
Introduction:
The goal of this lab was to show that the center of mass of an irregul