Hydraulics, Circular Motion, The Pendulum Flashcards Preview

Physics [GCSE] > Hydraulics, Circular Motion, The Pendulum > Flashcards

Flashcards in Hydraulics, Circular Motion, The Pendulum Deck (8)
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Think of as many hydraulically operated machines as possible!

Examples include:
Mechanical Diggers
Car Jacks
Hydraulic Lifts

1

Explain the following:
1: When you do a handstand, the pressure on your hands is greater than the pressure on your feet when you stand upright.
2: A sharp knife cuts more easily than a blunt knife.

Pressure=force/area

When the area is decreased (by standing on hands, using a sharp knife) so does the pressure

2

What is Pressure? Also, what is the unit of pressure?

Pressure is the force divided by the area which the force acts on. The unit of pressure is the pascal (pa) which is equal to 1 N/m²

3

How does pressure in a fluid behave?

Acts equally in all directions

4

Do you understand how hydraulic systems work?

Go revise it, you need diagrams to explain effectively, :3

5

Match each situation with the type of force that causes the circular motion.

electrostatic force, friction, gravity, pull (tension)

1: A car travelling round a bend
2: A stone being whirled around on the end of a string
3: A planet moving around the sun
4: An electron orbiting the nucleus

1: Friction between the tyres and the road
2: Pull (tension)
3: Gravity
4: Electrostatic force

6

Replace the missing words with these words:
decrease, increase, stay the same

1: The time period of a simple pendulum will ________ if it's length is made longer
2: If a playground swing in motion is not pushed repeatedly, the amplitude of its motion will gradually ________
3: If the bob of a simple pendulum is replaced by a bob of a smaller mass and the pendulum length is unchanged the time period will ________

1: increase
2: decrease
3: stay the same

7

How is the time period of a pendulum measured?

Measure the average time for 20 oscillations and divide the timing by 20.