# What type of forces are observed in the diagram? - PowerPoint PPT Presentation

PPT – What type of forces are observed in the diagram? PowerPoint presentation | free to download - id: 7108ee-YTRkN

The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
Title:

## What type of forces are observed in the diagram?

Description:

### What type of forces are observed in the diagram? Balanced forces Determine the net force placed on the piano. 25N + 20N = 45N 3. Which way will the piano move? – PowerPoint PPT presentation

Number of Views:105
Avg rating:3.0/5.0
Slides: 50
Provided by: AGia8
Category:
Tags:
Transcript and Presenter's Notes

Title: What type of forces are observed in the diagram?

1
• What type of forces are observed in the diagram?
• Balanced forces
• Determine the net force placed on the piano.
• 25N 20N 45N
• 3. Which way will the piano move?
• To the right.

2
• What type of forces are observed in the diagram?
• Unbalanced forces
• Determine the net force placed on the piano.
• 12N - 10N 2N
• 3. Which way will the piano move?
• To the right.

3
• Describe friction.
• Force that acts opposite to the motion of a
moving object.
• What type of surface can increase friction?
• Ice
• What type of surface can increase friction?
• Sticky surface

4
• Topic Forces and Motion
• Aim Describe Newtons 3 Laws of Motion.
• Do Now
• HW

5
• A student is riding a bike and applies the
brakes. What most helps the bike to stop?
• Friction
• Heat
• Gravity
• Momentum

6
• 2 people are pulling at opposite ends of a rope.
If they are pulling on the rope with equal but
opposite forces, what will happen to the rope?
• It will stay in place between the 2 people.
• It will move towards the right.
• It will move towards the left.
• It will fall to the ground.

7
• 2 people are pulling at opposite ends of a rope.
The person pulling on the right side of the rope
is applying a force of 50N while the person on
the left is applying a force of 70N. What will
happen to the rope?
• It will move towards the right.
• It will move towards the left.
• It will fall to the ground.
• It will stay in place.

8
(No Transcript)
9
• When workers spread sand over icy bridges and
roads in the winter, how does this help people
• The sand increases friction between the road and
tires of the car.
• The sand increases inertia of the car.
• The sand increases the speed of the car.
• The sand increases the momentum of the car.

10
• Determine the total net force being placed on the
rope.
• 320N 300N 20N
• Which way will the rope be pulled? Support your
• The rope will be pulled to the left.
• It moves in the direction of the greater
force.

11
• The diagram shows the amount of force required to
keep the same block of wood moving across the
table top.
• Explain why the round pencils in diagram 2
decreases the amount of force needed to move the
block of wood.
• The round pencil decreased the amount of
friction.

12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
• 1. Explain why you feel pulled back when the car
is starting and pushed forward when the car
stops?
• Inertia causes the object to resist a
change in motion.
• 2. Which one of Newtons laws does this
demonstrate?
• Newtons 1st law.

17
• A 60kg water skier is being pulled by a
speedboat. The force causes him to accelerate at
2 m/s2. Calculate the force that causes this
acceleration.
• F ma
• F 60kg x 2 m/s2
• F 120.0 N

18
• A driver steps on the gas and the car gradually
accelerates to 50km/h. The driver then slams on
the brakes to avoid hitting a box on the road. As
the car comes to a stop, the drivers body
appears to lurch forward in the seat until
restrained by the seat belt.
• Which law best explains why the drivers body
lurches forward when brakes are suddenly applied?
• Newtons 1st Law
• Newtons 2nd Law
• Newtons 3rd Law
• The law of gravity

19
• The tendency of a stationary object to resist
being put into motion is known as
• acceleration
• gravity
• inertia
• velocity

20
• Which of the following wagons should move faster
if pushed with the same force?
• A wagon containing a boy with a mass of 24kg
• A wagon containing a small bird with a mass of
10kg
• A wagon containing a big dog with a mass of 45kg
• A wagon containing an elephant with a mass of
60kg

21
(No Transcript)
22
(No Transcript)
23
• 1. A chair exerts a force of 20N on the floor.
What is the force that the floor exerts on the
chair?
• 10N
• 20N
• 21N
• 40N
• 2. Which one of Newtons Law is taking place in
the question above?
• Newtons 3rd law

24
(No Transcript)
25
(No Transcript)
26
• Describe gravity.
• It is the force of attraction between
all objects in the universe
• 2. Explain the relationship between gravity and
mass.
• As mass increases, gravity increase.
• 3. Explain the relationship between gravity and
distance between 2 objects.
• As the distance between 2 objects
increases, gravity decreases.

27
• Explain the difference between weight and mass.
• Weight is the force of measure of the force
of gravity on an object.
• Mass is the amount of matter in an object.
• 2. State the acceleration due to gravity on
Earth.
• ag 9.8 m/s2
• 3. State the equation used to determine an
objects weight on earth.
• W mass x ag

28
(No Transcript)
29
• 1. The moon has a smaller mass than the earth. If
you were able to travel to the moon, your weight
would
• increase
• decrease
• remain the same
• vary from day to night
• 2. What would happen to your mass?
• The mass would not change.

30
• The force of gravity on an object depends
primarily on the objects
• density
• momentum
• mass
• volume

31
• The distance of the star Vega from Earth is 1.6
million times greater than the distance from the
sun to the Earth. Which of the following best
describes the gravitational influence of Vega on
Earth?
• It is roughly equal to that of the sun.
• Its influence is greater than that of the sun.
• Its influence is small because of its distance.
• It influences the magnitude of Earths mass.

32
• If a solid object is taken from Earth far into
space, which of the following measurements of the
object will change the most?
• density
• mass
• volume
• weight

33
• If you were able to go to the top of a building
and simultaneously drop an apple and a basketball
, they would hit the ground at the same instant
because
• the force of gravity on them is equal
• they have the same mass
• air resistance on both is the same
• they have the same amount of kinetic energy

34
• As a bike rider goes up a hill, the force of
gravity acts to
• increase the weight of the rider
• increase the acceleration of the rider
• decrease the weight of the rider
• decrease the speed of the rider

35
• How would the measureable properties of a golf
ball change if it were moved from the earth to
the moon?
• It would have the same weight but different mass.
• It would have the same mass but different weight.
• It would have the same density but different
mass.
• It would have the same mass but different
density.

36
• Which of the following cause a ships iron anchor
to sink to the ocean floor when released
overboard?
• Nuclear forces
• Magnetism
• Gravity
• Chemical forces

37
• Which of the following statements best describes
the force of Earths gravity on a rocket moving
upwards?
• The gravitational force is constant at all
altitudes.
• The gravitational force is weaker when the rocket
is higher.
• The gravitational force is stronger when the
rocket is higher.
• The gravitational force is zero when the altitude
is greater than 10, 000 miles.

38
• Describe magnetism.
• Force of attraction or repulsion.
• 2. Identify materials attracted to magnets.
• Iron, nickel, cobalt, steel

39
• Describe the magnetism occurring in the diagram.
• Opposite poles are attracted to each other.

40
• Describe the magnetism occurring in the diagram.
• Alike poles repel each other.

41
• 1. Describe a magnetic field.
• An area around magnet where magnetic forces act.
• 2. Where is magnetic field the strongest?
• It is strongest at poles
• 3. What occurs to the magnetic field as the
distance from the magnet increases?
• The magnetic field decreases.

42
• What is the direction of a magnetic field?
• It moves from north to south.

43
• Describe what is occurring in the diagram.
• Poles that are alike repel each other.

44
(No Transcript)
45
(No Transcript)
46
(No Transcript)
47
(No Transcript)
48
N
S
N
49
(No Transcript)