Resultant force hyperlearning

Resultant Force










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Slide 1: Diapositive
ScienceUpper Secondary (Key Stage 4)GCSE

Cette leçon contient 48 diapositives, avec quiz interactifs, diapositives de texte et 1 vidéo.

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Resultant Force










Hyperlearning

Slide 1 - Diapositive

9

Slide 2 - Vidéo

00:00
What is the resultant force for terminal velocity?

Slide 3 - Question ouverte

00:06
The downwards arrow represents which of the following forces?
A
weight
B
tension
C
friction
D
normal contact

Slide 4 - Quiz

00:09
What part of a vector quantity is shown by the arrow head?
A
magnitude
B
size
C
action
D
direction

Slide 5 - Quiz

00:18
The resultant force is the single force that has the same effect as..
A
all the individual forces acting together
B
all the individual forces multiplied together
C
all the individual forces against each other
D
all the individual forces opposing each other

Slide 6 - Quiz

00:26
What sum was done to calculate the resultant force on the rocket?

Slide 7 - Question ouverte

00:29
What do you think the resultant force is if the forces actin on an object are balanced?
A
100N
B
-10N
C
0
D
0N

Slide 8 - Quiz

00:40
T of F: If the resultant force on an object is 0N then the object will always be stationary

Slide 9 - Question ouverte

00:56
Which force opposes the skydivers weight as they are falling?
A
gravity
B
driving force
C
air resistance
D
friction

Slide 10 - Quiz

01:00
At terminal velocity when the resultant force on teh skydiver is zero, what word will be used to describe his speed?
A
constant
B
accelerating
C
negative
D
instant

Slide 11 - Quiz

What are you going to learn?
In this lesson you're going to learn how to . . .
1
2
3
calculate resultant force
use resultant force to describe the motion of the object
apply your learning

Slide 12 - Diapositive

Names of forces
  • Driving or applied force (thrust)
  • Weight
  • Gravity
  • Normal contact
  • Drag forces; Friction, Air resistance, Water resistance
  • Upthrust (buoyancy)
  • Tension
  • Magnetic
  • Electrostatic

Forces key facts
  • Measured using a Newton meter
  • Measured in Newtons (N)
  • Represented by an arrow on a diagram to show direction and size of force
  • Act on objects and can change the speed, direction or shape
  • Can be contact or non-contact
  • In opposing pairs can be balanced or unbalanced

Slide 13 - Diapositive

What is the name of these pieces of measuring equipment?

Slide 14 - Question ouverte

Resultant force
Calculating for single pairs of  forces
  • Pointing the same direction add together
  • Pointing in opposite directions subtract

Slide 15 - Diapositive

What is the sum for the resultant force on this cart?

Slide 16 - Question ouverte

What is the calculation for the resultant force in this cyclist?

Slide 17 - Question ouverte

What calculation for the resultant force acting on the cup?

Slide 18 - Question ouverte

Write the calculation for resultant force on this cart.

Slide 19 - Question ouverte

Resultant force
Step 1 is to calculate the resultant force

Step 2 is to use the calculated value to decide what is happening to the object that the forces are acting on

Slide 20 - Diapositive

Worked examples
  • 750N - 500N = 250N to the right
  • 400N - 400N = 0N stationary or constant speed
  • 500N - 300N = 200N to the left OR
  • 300N - 500N = -200N
  • 500N - 500N = 0N stationary or constant speed
  • 1000N - 500N = 500N to the right

Slide 21 - Diapositive

What is the resultant force on the box?

Slide 22 - Question ouverte

What is the resultant force on the box?

Slide 23 - Question ouverte

What is the resultant force on the car?

Slide 24 - Question ouverte

What is the resultant force on the ball?

Slide 25 - Question ouverte

Calculate the resultant force.

Slide 26 - Question ouverte

Resultant force
More than one pair of forces.
Starting simple:
One pair is balanced (340N - 340N) so resultant force = 0N

2nd pair is unbalanced (550N - 230N) so resultant force = 320N upwards

Slide 27 - Diapositive

Calculate the resultant force on the box

Slide 28 - Question ouverte

Calculate the resultant force on the box

Slide 29 - Question ouverte

Calculate the resultant force on the box.

Slide 30 - Question ouverte

Calculate

Slide 31 - Carte mentale

Calculate

Slide 32 - Carte mentale

Compare

Slide 33 - Carte mentale

Describe

Slide 34 - Carte mentale

Calculate

Slide 35 - Carte mentale

Calculate
and
Compare

Slide 36 - Carte mentale

Describe
and
explain

Slide 37 - Carte mentale

Congratulations. You just finished the resultant forces lesson!
🥳

Slide 38 - Diapositive

Need help?
Video 
Watch these short videos explaining resultant forces:
https://www.youtube.com/watch?v=PL8ATKipoB4
https://www.youtube.com/watch?v=YGGxf6cp3Lo
Support
Go to a revision website to spend more time learning:
https://www.elevise.co.uk/g-a-cst-p5-home.html
https://senecalearning.com/en-GB/

Slide 39 - Diapositive

What is the force that pulls objects towards each other?
A
Magnetism
B
Gravity
C
Tension
D
Friction

Slide 40 - Quiz

Who formulated the law of universal gravitation?
A
Galileo Galilei
B
Isaac Newton
C
Albert Einstein
D
Nikola Tesla

Slide 41 - Quiz

What happens to the force of gravity between two objects when the distance between them increases?
A
Disappears
B
Decreases
C
Remains constant
D
Increases

Slide 42 - Quiz

What is the formula for gravitational potential energy?
A
F=ma
B
P=IV
C
mgh
D
E=mc^2

Slide 43 - Quiz

In which direction does gravitational potential energy increase?
A
sideways
B
backward
C
downward
D
upward

Slide 44 - Quiz

What is the SI unit for gravitational potential energy?
A
volt
B
joule
C
ampere
D
watt

Slide 45 - Quiz

What is upthrust also known as?
A
Gravitational pull
B
Centripetal force
C
Frictional force
D
Buoyant force

Slide 46 - Quiz

What causes upthrust?
A
Expansion of solids
B
Displacement of fluid
C
Increase in temperature
D
Magnetic force

Slide 47 - Quiz

What effect does upthrust have on an object in a fluid?
A
It decreases the volume
B
It reduces the apparent weight
C
It changes the color
D
It increases the density

Slide 48 - Quiz