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- @If a person wanted to loosen this nut, where would be the best place and distance to apply a force?
- #tur1
- At x
- At w
- At z
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- @The same force is applied to w and y. The turning force at y is:
- #tur1
- Smaller than at w
- Bigger than the turning force at w
- The same size as the turning force at w
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- @Turning forces depend on:
- The force & distance from the pivot
- Forces only
- Distances only
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- @The units of a turning force are:
- Nm
- Nm²
- Pa
-
- @Which one of the following ideas would not help to make an object more stable?
- Putting extra mass on top of it
- Making the base wider
- Making the centre of gravity lower
-
- @The turning effect of a force is called:
- A moment
- Equilibrium
- Pivot
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- @When forces balance exactly this is called:
- Equilibrium
- Reaction
- Inertia
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- @For equilibrium to occur in turning forces, which one of the following must be true?
- The clockwise moment equals the anticlockwise moment
- The clockwise moment is just larger than
- The clockwise moment must be zero
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- @A racing car is stable because:
- It has a low centre of gravity
- It is very light
- It is shaped to go through the air easily
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- @Twice as much force is applied at point z then at point w. No force is applied at points x or y. What happens?
- #tur1
- Nothing
- The nut turns clockwise
- The nut will move anticlockwise
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- @A turning force depends on two things. These are:
- Force and distance from fulcrum
- Mass and weight
- Gravity and friction
-
- @If the centre of gravity of an object is raised, then the object will:
- tend to topple over
- become more stable
- remain exactly as it was before
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- @A wine glass is less stabe when it is full because:
- the centre of gravity (mass) has been raised
- the liquid occupies a large surface area
- the mass os the glass has increased
-
- @If you only had one mass to place on the right hand side, where would you put it to balance?
- #turn2
- Position Z
- Position W
- Position Y
-
- @If you placed a single mass at position Y then:
- #turn2
- The balance would turn anticlockwise
- Nothing would happen as it would be perfectly balanced
- Clockwise movement would occur
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