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Mechanisms, levers and structures

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

Which three components make up a lever system?

a)

Load, Effort, Moment

b)

Load, Moment, Reaction

c)

Fulcrum, Effort, Load

d)

Fulcrum, Effort, Lever

2.

True or false? A cantilever beam is built in at one end only.

a)

True

b)

False

3.

Which Greek letter is used to denote the total or 'sum of' several different values?

a)

Alpha

b)

Beta

c)

Delta

d)

Sigma

4.

Lever systems are primarily used to make work...

a)

Quicker

b)

Easier

c)

Harder

d)

Quieter

5.

A Coke can is an example of which kind of structure?

a)

A shell

b)

A frame

c)

A solid

6.

Bridges are designed and built in order to (a)   a gap.

7.

Which geometric shape is used to represent the fulcrum within a lever system diagram?

a)

A triangle

b)

A square

c)

A circle

d)

A parallelogram

8.

Force is measured and presented using which unit of measurement?

a)

Newtons

b)

Ohms

c)

Joules

d)

m/s

9.

How many different classes (or types) of lever exist?

a)

2

b)

3

c)

4

d)

5

10.

In order to calculate a moment, which TWO values need to be multiplied?

a)

Force

b)

Distance

c)

Gravity

d)

Resistance

11.

A turning effect that can occur on a structure is known as a ______.

a)

Moment

b)

Load

c)

Hoist

12.

True or false? The Forth Road Bridge and the new Queensferry Crossing are both examples of a suspension bridge.

a)

True

b)

False

13.

If a structure is in equilibrium, the sum of all downward forces must equal the sum of all...

a)

Upward forces

b)

Clockwise moments

c)

Loads

d)

Anti-clockwise moments

14.

A beam that is built in at either end is known by which term?

a)

Lever

b)

Cantilever

c)

Encastre

d)

Span

15.

The upward forces that act on a beam at the point(s) of support are known as what?

a)

Ratios

b)

Moments

c)

Actions

d)

Reactions

16.

True or false? A moment will increase the further away a force moves from a turning point.

a)

True

b)

False

17.

Structures, forces and distances can be represented using what kind of diagram?

a)

A sub-system diagram

b)

A free-body diagram

c)

An orthographic diagram

18.

A beam or a member that is being pulled from either end is said to be what?

a)

In tension

b)

In compression

c)

Bending

d)

Twisting

19.

In order to convert a value from kilograms into Newtons, it must be multiplied by what?

a)

100

b)

The force of gravity

c)

Distance

d)

Itself

20.

The technique employed to provide strength and support within frame structures is known by which name?

a)

Triangulation

b)

Optimisation

c)

Elimination

d)

Co-ordination