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Phys 1101/1120 - Surrey Campus
Expt. 4: Hooke's Law
DATA
Hanger and added masses are
weighed together for Total Mass
Total Mass:
m (
Energy
Hydro Electric Plant in Niagara, it
generates 4 million Kilowatts
As the water falls through a
great height, its potential energy
is converted to kinetic energy.
This kinetic energy allows the
water to do work to drive a
turbine which generates
ele
INTRODUCTION TO UNCERTAINTIES:
A measurement by its very nature cannot be exact and it must be
recognized that realistic error limits must be assigned to its value. If an
experimenter claims too high a precision, he will mislead those who use
his result f
Work and Power
Work
The term work was introduced when steam engines were used to
lift buckets filled with water from mines. If we have a constant
force that is acting on an object during a certain distance and we
graph it we have the following.
Work
The W
Equilibrium
A body is in equilibrium if the sum of forces and
torques acting on it are equal to zero, this is:
! = 0
! = 0
Example: For the system shown below find the following
a) Draw the free body diagram.
b) Find the tensions in the cords shown so tha
Impulse, Linear Momentum and
Collisions
Impulse and Linear Momentum
Newtons Second Law:
=
If we use the average acceleration we have:
& (
= =
= & (
= = Impulse N -
= = Linear Momentum N -
Newtons Second Law (original definition):
= =
=
23
Energy Part II
Non-Conservative Forces
Non-Conservative Forces will produce losses in the
system. In most cases friction will be a nonconservative that can produce work. If non-conservative
forces are present in a system, then it will no be able to
transf
PHYS 110 Midterm II example Fall 2016
This example is produced for the use of students registered in PHYS
110 during the September December 2016 term at UVic. It may not be
otherwise reproduced or distributed.
c
M. Laidlaw 2016
Copyright M. Laidlaw P110 2