Topics 1.10 and 1.11 - Circular Motion and Hydraulics

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What happens when an object moves in a circle?
When an object moves in a circle it continuously accelerates towards the centre of the circle, this changes the direction of motion of the body but not it's speed
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What is the name of the resultant force here?
The resultant force causing this acceleration is called the centripetal force, it is always directed towards the centre of the circle
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What can increase the centripetal force of an object?
An increase in the mass of the object, An increase in the speed of the object, A decrease in the radius of the circle
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What is virtually incompressible?
Liquids are virtually incompressible, and the pressure in a liquid is transmitted equally in all directions
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What is the relationship between pressure, force and cross-sectional area?
Pressure = Force ÷ Cross-Sectional Area
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How can a system be used as a force multiplier?
The use of different cross-sectional areas on the effort and load side of a hydraulic system can enable it to be used as a force multiplier
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Card 2

Front

What is the name of the resultant force here?

Back

The resultant force causing this acceleration is called the centripetal force, it is always directed towards the centre of the circle

Card 3

Front

What can increase the centripetal force of an object?

Back

Preview of the front of card 3

Card 4

Front

What is virtually incompressible?

Back

Preview of the front of card 4

Card 5

Front

What is the relationship between pressure, force and cross-sectional area?

Back

Preview of the front of card 5
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