Chapter 3 - Unit 1

Question 1

Why did people design tools/mechanisms (1)

Answer 1

To make tasks easier

Question 2

How do mechanical systems achieve mechanical advantage? (2)

Answer 2

Theough movement/force

Question 3

What is mechanical advantage (1)

Answer 3

Makes tasks easier to do because of tools/mechanical devices/ machines to increase the force used to do a job

Question 4

What does mechanical advantage do?

Answer 4

It multiplies the input force (effort) to produce a much larger output force (load)

Question 5

What important thing do you need to remember when designing a mechanism

Answer 5

How much mechanical advantage is provided (shows how much input force is needed)

Question 6

What is the formula for output emergy

Answer 6

Mechanical advantage x input force

Question 7

What is the formula for mechanical advantage

Answer 7

Output force
——————-
Input force

Question 8

What is a large mechanism made up of? (1)

Answer 8

A complex of smaller mechanisms

Question 9

Give an eg of a mechanism with many smaller mechanisms

Answer 9

A backhoe, its used for digging and to transfer gravel by pushing buttons wnd pulling levers