P3.2 Hydraulics and circular motion Flashcards
What happens to pressure in a liquid?
Is transmitted equally in all directions
What happens to a force exerted on one point on a liquid?
It will be transmitted to other points in the liquid
What makes hydraulic systems be able to be used as force multipliers?
The use of different CROSS-SECTIONAL AREAS on the EFFORT and LOAD side (of a hydraulic system)
What happens to the acceleration of an object moving in a circle?
it continuously accelerates towards the centre
What does the acceleration of an object moving in a circle change?
The direction of the motion of the body, NOT SPEED
What is centripetal force and which direction does it act in?
The resultant force causing the acceleration
ALWAYS directed towards the CENTRE of the circle
Three ways to increase centripetal force:
- inc. mass
- inc. speed
- dec. radius
Hydraulics: If a force is applied to a small area, it produces…
…a BIGGER PRESSURE than on a BIGGER area
Hydraulics: If pressure acts on a bigger area, it will…
….exert a bigger force than on a smaller area
As a car makes a turn, what are the forces acting on the wheels that allow the car to turn?
Frictional forces
What is the law of moments?
That when an object IS NOT TURNING, the total moment of the forces in a CLOCKWISE direction are EQUAL to the total moment of the forces acting in the anti-clockwise direction
