EXERCISE 1 - First and Second Newton's law
Description of the
exercise:
The exercise is available at this link (if it does not work you need to install Java).
The exercise is available at this link (if it does not work you need to install Java).
Once you click the
link the following appears:
You have to
select the last (Acceleration)
Then you’ll see this screen:
Available to
you:six (6) courses of varying masses (refrigerator 200kg, two packages of 50kg, 40 kg girl,adult 80kg, bucket of water
100 kg.)
On the right
side there is a section to change (adjusted) physical quantities.By
clicking theForces it shows you hosts, Sum of forces
shows you the resultant, Values
for the values
of the forces, Masses
for the masses
of the bodies.By clicking the Speedyou can observe the variation of the speed.By clicking Acceleration you can observe the variation of the acceleration.
Friction(clockwise - friction increases, left decreases).Applied force can also be
adjusted.Objects are
moved by dragging.
Objectives of the exercise:
1. To examine the dependence of the speed of the load from the force.
2. To examine the dependence of the speed of the load from the force of friction.
2. To examine the dependence of the speed of the load from the force of friction.
4. To examine the dependence of the
acceleration of the load from the force. How does the speed change when a
constant fore of for example 200N is applied?
5. To examine the dependence of the acceleration of the load from the force of friction.
5. To examine the dependence of the acceleration of the load from the force of friction.
6. To examine the dependence of the acceleration of the load of the weight of the load.
7. To find a law linking:strength, acceleration and mass.
8. Reduce friction to zero, apply a force of 300Nwith pulling the man of the right, thereby observe the changing of speed and acceleration.Suddenly stop pushing load.What do you observe?What happened to the speed and acceleration?
Important: Ladders Speed and Acceleration giving values of the speed and acceleration resulting from the resultant force)
Instructions:
1.
Important: you need to choose a subject
and should not be changed during the measurement, do not change the weight of
the load during the measurement. Apply a force of 50, 100, 150, 200 Newtons, In which case
does the speed increase most rapidly?
2.
(Important: apply a constant force of
200N, do not change the weight of the load during the measurement.) Test the speed change with
different loads. In which case does the speed change most rapidly?
3.
(Important: apply a constant force of
300N, do not change the friction during the measurement) Test the rate of change of speed
with different friction. In which case does the speed change most rapidly?
4.
(Important:
you need to choose a subject and should not be changed during the measurement,
do not change the weight of the load during the measurement.)
5.
(Important:apply a constant force of
200N, do not change the weight of the load during the measurement.)
6.
(Important:apply a constant force of
300N, do not change the friction during the measurement.)
7.
(In
order to do the measurements you have to choose ice because Ladders Speed and Acceleration give you values of the speed and acceleration
resulting from the net force, and only the applied force is given with
numbers but not the friction force. So we put zero friction in order the
applied force to be equal to the net force (the one that we need).)
Force
(N)
|
Acceleration
(m/s2)
|
50
|
|
100
|
|
150
|
|
200
|
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