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[lo 1.1; lo 1.3; lo 3.1]

Write a report (three A4 sheets) on Isaac Newton and on his contribution to science. Also refer to the saying 'The apple never falls far from the tree'. Include your report in the module as extra pages following this one.

Assessment of RESEARCH

Were you able to find out who Isaac Newton was and do you understand his contribution to science?

[LO 1.1; LO 1.3; LO 3.1]

Activity:

Describing the relationship between mass, weight and force

[lo 2.3; lo 2.4]

The earth attracts all objects that are in its proximity.

  • We know the following:
  • all objects have mass and all masses exert tractive force (pull); this mostly is not observable;
  • the greater the masses, the greater the tractive force; as the earth is large, we only observe tractive force in one direction (i.e. as the earth attracting our bodies);
  • the closer the proximity between masses, the greater the tractive force between them.
  • The mass of an object serves as an indication of the amount of matter and this is measured in
  • The weight of an object signifies the amount of tractive force (pull) that the earth exerts on the particular object.
  • The tractive force which attracts objects to the earth is known as gravitation .
  • The unit for measuring force is NEWTON (N).

The weight of an object that has a mass of 100 g is 1 N

  • This is roughly equal to the weight of a small banana or a small apple.

Questions:

1. ONE kilogram has a weight of .........................N.

2. Your mass will remain the same, no matter where you may be in the universe, but your weight will vary. Explain this. ( Refer to the module dealing with space programmes.)

3. What is your mass?..................................................

4. What is your weight?..................................................

5. What would your weight be on the moon where the tractive force is 0,6 N?

6. FORCE and WEIGHT are both measured in NEWTON. Explain this.

7. You are able to observe the effect exerted on an object by the force of attraction if you lift it up by means of an elastic band. This demonstrates the principle behind the SPRING BALANCE.

8. Describe the difference between a spring balance and a bathroom scale.

[LO 2.1; LO 2.3; LO 2.4]

Activity:

Measuring force (weight) with a spring balance

[lo 1.2; lo 2.4]

Measure the weight of a number of objects with the help of a calibrated spring balance.

  • First measure the weight after suspending the object from the spring balance by means of a length of string.
  • Then place the object on the floor and pull it along to get a reading. Note down both readings.
  • Repeat each operation three times for each object.

Assessment of the ability to measure weight/force by means of a spring balance

[LO 1.2]

QUESTIONS

1. What is inside the spring balance to make it possible to take a measurement?

2. Why do the two readings differ?

3. What is the meaning of calibrated ?

4. What would the weight of a 2,5-kg bag of sugar be?

5. What is the purpose of the adjustment for zero on the spring balance?

6. Identify the forces that are present.

7. Distinguish between weight and mass.

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natural sciences grade 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11069/1.1
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