Lesson T4.2.2
T4.2.2 Force in mechanical systems Quiz: KS3 Design & Technology, Unit 4
20 questions
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Lesson T4.2.2, Force in mechanical systems: 20 multiple choice questions for the KS3 Design & Technology (National Curriculum), Unit 4: Technical knowledge, written with Revision Ninja.
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The 20 questions
-
What is a push or pull that can change an object's motion?
- Force
- Friction
- Pressure
- Moment
-
What is the SI unit used to measure force?
- Watt
- Joule
- Pascal
- Newton
-
What term describes the turning effect of a force about a pivot?
- Tension
- Moment
- Thrust
- Friction
-
In a lever system, how is mechanical advantage calculated?
- Load plus effort
- Effort times load
- Effort over load
- Load over effort
-
In a second class lever, where is the fulcrum located?
- Below the effort
- In the middle
- At one end
- Above the load
-
A pair of scissors is an example of which class of lever?
- Second class
- Fourth class
- First class
- Third class
-
A pair of tweezers is an example of which class of lever?
- Second class
- Third class
- First class
- Zero class
-
A lever is 2 m long. An effort of 10 N is applied 2 m from the pivot and balances a load 0.5 m from the pivot. What is the load?
- 5 N
- 40 N
- 20 N
- 10 N
-
What force opposes the motion of one surface sliding over another?
- Upthrust
- Tension
- Friction
- Gravity
-
What pulling force is transmitted along a taut rope or cable?
- Compression
- Torsion
- Shear
- Tension
-
What happens to the weight of a 5 kg object on Earth, using a gravitational field strength of 10 N/kg?
- It is 500 N
- It is 50 N
- It is 5 N
- It is 0.5 N
-
What physical quantity is defined as force acting per unit area?
- Energy
- Moment
- Power
- Pressure
-
A force of 60 N acts on an area of 2 m squared. What is the pressure?
- 62 Pa
- 0.03 Pa
- 30 Pa
- 120 Pa
-
Why do designers add a rubber pad to the bottom of a chair leg?
- To increase mass
- To increase friction
- To reduce friction
- To absorb heat
-
When opposing forces on a stationary object are equal, what is the state called?
- Compression forces
- Unbalanced forces
- Balanced forces
- Dynamic tension
-
For a balanced lever, what must equal the total anticlockwise moment?
- Maximum pivot load
- Total clockwise moment
- Total downward force
- Average turning rate
-
What is the standard SI unit for measuring pressure?
- Pascal
- Newton
- Watt
- Joule
-
When an object moves at constant speed, how does friction compare to the push?
- Greater in size
- Zero in force
- Equal in size
- Smaller in size
-
A 4 kg object sits where the gravitational field strength is 10 N/kg. What is its weight?
- 40 N
- 400 N
- 4.4 N
- 0.4 N
-
What term describes the turning effect of a force about an axis?
- Thrust
- Momentum
- Torque
- Inertia
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