Forces

turning forces, centre of mass, moments, levers, stability, pendulums, hydraulics, circular motion, 

?
moment (Nm) =
force (N) x perpendicular distance from the line of action of the force to the pivot (m)
1 of 12
centre of mass is....
the point at which the whole mass is thought to be concentrated (plumbline experiment)
2 of 12
for moments to be balanced....
total anticlockwise moments = total clockwise moments
3 of 12
levers work by...
work = force x distance_ levers increase the distance from the pivot so less force is needed to get the same moment or work done
4 of 12
an object will begin to tip if....
the centre of mass moves beyond it's base because this causes a resultant force
5 of 12
time period for one pendulum swing =
1 / frequency
6 of 12
pressure in liquids is transmitted...
equally in all directions
7 of 12
pressure (Pa) =
force (N)/ cross-section area (m2)
8 of 12
hydraulics are force multipliers because....
they use a small force to produce a bigger force (pressure at both ends of the piston will stay the same so is transmitted through the liquid and if the 2nd piston has a larger surface area then due to Pa=N/m2 there will be a greater force)
9 of 12
if an object is travelling in a circle it will be constantly changing it's velocity because...
velocity is both speed and direction, so the object will constantly be accelerating towards the centre of the circle
10 of 12
which force is providing the centripetal force in a car going around a bend?
Friction
11 of 12
centripetal force depends on....
mass, speed and radius
12 of 12

Other cards in this set

Card 2

Front

the point at which the whole mass is thought to be concentrated (plumbline experiment)

Back

centre of mass is....

Card 3

Front

total anticlockwise moments = total clockwise moments

Back

Preview of the back of card 3

Card 4

Front

work = force x distance_ levers increase the distance from the pivot so less force is needed to get the same moment or work done

Back

Preview of the back of card 4

Card 5

Front

the centre of mass moves beyond it's base because this causes a resultant force

Back

Preview of the back of card 5
View more cards

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