Moments

Question 1

Centre of Mass

Answer 1

the point at which the mass of a body may be thought to be concentrated

Question 2

Driving Gear

Answer 2

gear that moves

Question 3

Driven Gear

Answer 3

gear that is moved

Question 4

Effort

Answer 4

force exerted on a lever

Question 5

Gears

Answer 5

rotating wheels with teeth that interlock with each other used to transmit and often multiply rotational forces, hence they act in a similar way to levers

Question 6

Idle Gear

Answer 6

gear between driving and driven

Question 7

Lever

Answer 7

something to amplify the force, meaning it exerts a greater force than that that is applied by the effort

Question 8

Moment

Answer 8

turning effect of a force

Question 9

Newton Metres

Answer 9

measurements for moments

Question 10

Period

Answer 10

time taken for a pendulum to swing

Question 11

Pivot

Answer 11

the point at 90 degrees to the force which the turning happens around

Question 12

Plumb Line

Answer 12

mass on a string that hangs vertically

Question 13

Point of Balance

Answer 13

must be directly above the centre of mass

Question 14

Principle of Moments

Answer 14

the moment of any force is equal to the algebraic sum of the moments of the components of that force

Question 15

Stability

Answer 15

a measure of a body’s ability to maintain its original position

Question 16

Total Clockwise Motion

Answer 16

same as the total anticlockwise moment