Part A
What is the direction of the net force acting on the object at position A?
Hints
What is the direction of the net force acting on the object at position A?
upward
downward
to the left
to the right
The net force is
zero.
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HW 4A
Item 2
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Item 2
A gymnast of mass 60.0 kg hangs from a vertical rope attached to the ceiling. You can
ignore the weight of the rope and assume that the rope does not stretch. Use the
value 9.81m/s2 for the acceleration of gravit
HW 4A
Item 1
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Item 1
Learning Goal:
To understand Newton's 1st law.
Newton's Principia states this first law of motion:
Part A
If a car is moving to the left wit
velocity, one can conclude that
there must be no forces e
An object sub
Chapter 1
~
For R
=
~ + B,
~
A
Rx
=
Ax + B x
Ry
=
Ay + B y
Rz
=
Az + Bz
~ = Axi + Ay j + Az k
A
For C
~ B
~
A
~ B,
~
= A
~ B
~
A
= Ax Bx + Ay By + Az Bz
~ B|
~ cos
= AB cos = |A|
x
x2 x1
=
vavx =
t2 t1
t
x
dx
vx = lim
=
t0 t
dt
v2x v1x
vx
aavx =
=
t2 t1
HW 4A
Item 1
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or at constant speed in a right line.
Part A
If a car is moving to the left wit
This law may be stated as follows: If the vector sum of all forces acting on an object is zero, velocity, one can conclude that
then the ac
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or at constant speed in a right line.
Part A
If a car is moving to the left wit
This law may be stated as follows: If the vector sum of all forces acting on an object is zero, velocity, one can conclude that
then the acceleration of
Coulombs Law
The goal of this lab is to experimentally establish the distance and charge dependence of
the electrostatic force using the apparatus shown in Figure 1. The apparatus includes three
graphene-coated polystyrene spheresone hanging on a thin str