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P5: Quiz 2
P5: Quiz 2
1)
a) Give a definition of a contact force.
b) Give a definition of a non-contact force.
2) Say whether the following forces are contact or non-contact forces.
a) Gravity
b) Friction
c) Tension
d) Magnetism
e) Air resistance
f) Normal reaction force
g) Electrostatic force
3) We have the diagram below.
a) Give a definition of a contact force.
b) Give a definition of a non-contact force.
2) Say whether the following forces are contact or non-contact forces.
a) Gravity
b) Friction
c) Tension
d) Magnetism
e) Air resistance
f) Normal reaction force
g) Electrostatic force
3) We have the diagram below.
The diagram shows the force of the earth being attracted to the moon. Draw on the diagram the force of attraction between the moon and the earth.
4)
a) Define what is meant by the normal reaction force.
b) I place a cup on a table. Weight is the force that pulls the cup towards the earth. Is weight a contact or non-contact force?
c) The diagram below shows a cup on a table with the force of weight shown.
4)
a) Define what is meant by the normal reaction force.
b) I place a cup on a table. Weight is the force that pulls the cup towards the earth. Is weight a contact or non-contact force?
c) The diagram below shows a cup on a table with the force of weight shown.
Draw on the normal reaction force.
5) We have two magnets; magnet 1 and magnet 2.
5) We have two magnets; magnet 1 and magnet 2.
a) The above diagram shows the forces of attraction from magnet 1 to magnet 2. Draw the force of attraction from magnet 2 to magnet 1.
b) I now flip magnet 1 – the new position of magnet 1 is shown below.
b) I now flip magnet 1 – the new position of magnet 1 is shown below.
i) Do the magnets attract or repel each other?
ii) Draw the forces acting on the two magnets.
6) The ball below is travelling towards the right.
ii) Draw the forces acting on the two magnets.
6) The ball below is travelling towards the right.
a) Draw an arrow to show the direction of the frictional force (do not worry about the length of your arrow).
b) Is friction a contact or non-contact force?
7) The diagram below shows a skydiver just after he has jumped out of a plane.
b) Is friction a contact or non-contact force?
7) The diagram below shows a skydiver just after he has jumped out of a plane.
On the diagram above, draw arrows to show weight and air resistance (do not worry about the length of your arrow).
8) A hanging basket in a garden is held up by a rope. A diagram of the hanging basket is shown below.
8) A hanging basket in a garden is held up by a rope. A diagram of the hanging basket is shown below.
Draw arrows on the above diagram to show weight and tension.