Basic physics Flashcards
yayaya know ur symbol of units, use the book cuz we still want to learn a new technique
Okay
Describe scalar quantity?
Only magnitude e.g. temperature = 20 degrees celsius
Describe vector quantity?
Magnitude and direction e.g. velocity = 50 m/s East
How do u resolve vectors?
SoH Cah ToA
U wanna have the scalars and vectors? come and take it
(pg 6.)
okay
Equation for horizonal component?
x = Z Cos ()
Equation for vertical component?
y = Z Sin ()
Page 10 cuz fr we need a new technique
okay
Whats the contact force on a banked slope?
Well it’s on the right angle ig
What’s the weight down slope on banked slope?
Hypotenuse
How to find w? (weight)
= mg (Mass x Gravity)
Equation for p? (density)
= m/v (Mass/Volume)
Define C of Mass
The point where total mass of object can be treated as a single point
Define C of Gravity
Single point within a body at which entire weight of body may be considered to act
Ye mate look at page 18
okay?
The condition of CoG & CoM to coincide?
When there’s a uniform gravity present in the region
What can cause vehicle to tip over?
When CoG passes point of pivot
How to increase size of moment?
Increase force
Increase perpendicular distance between force and pivot
Unit of moment?
Nm
What principle of moments state?
When in rotational equilibrium, sum of clockwise moments must = sum of anti-clockwise moments
What the 2 conditions for a system to be in equilibrium?
No net force
No net moment
Define moment of a force?
The turning effect of a force applied to a rotational system at a distance from the axis of rotation
Page 29 and onwards are all the questions, i advise u answer basically the homework again off by heart assuming that u did revise everything up until here. But ye take ur time, understand ur shit, technique type shit
okay
