Moments, Levers and gears

Question 1

What is a moment and how do they act?

Answer 1

The turning effect of a force that act around a point in a clockwise or anti-clockwise direction

Question 2

Where is the point usually?

Answer 2

The pivot(fulcrum)

Question 3

What is perpendicular distance?

Answer 3

The distance from the pivot to the line of action

Question 4

What happens if an object is balanced?

Answer 4

The total clockwise movement is equal to the total anti-clockwise movement around a pivot

Question 5

What type of lever are scissors?

Answer 5

Effort-pivot-load

Question 6

What type of lever is a wheelbarrow

Answer 6

Pivot-load-effort

Question 7

What type of lever is tweezers?

Answer 7

Pivot-effort-load

Question 8

What happens if the lever is longer and further away from the pivot?

Answer 8

More greater force is applied on load making it easier

Question 9

How do gears rotate?

Answer 9

The teeth move in the same direction but the gears rotate in opposite directions

Question 10

What happens if the driven gear is larger?

Answer 10

It will rotate slowly with greater moment

Question 11

What happens if the driven gear is smaller

Answer 11

It will rotate quickly with smaller moment