Mechanics year 2 Flashcards
(14 cards)
Acceleration of horizontal projectile
“0”
Horizontal component of initial velocity
“Ucosx”
Vertical component of initial velocity
“Usinx”
Time of flight formula (projectiles)
“2Usinx / g”
Time to reach greatest height formula (projectiles)
“Usinx / g”
Range on horizontal plane formula (projectiles)
“U^2 sin2x / g”
Equation of trajectory formula (projectiles)
“y = x tan(alpha) - gx^2 ((1+tan^2 (alpha)) / 2U^2)”
For moments, what do you use sin or cos?
“Moving away from the angle = sin (moveSaway)\nMoving towards the angle = cos (cowards)”
What is a moment measured in?
“Nm”
What is the sum of the moments acting on a body called?
“The resultant moment”
What are coplanar forces?
“Forces which act in the same plane”
What do we know about a rigid body in equilibrium?
“Resultant force in any direction = 0N\nResultant moments about any point = 0Nm”
Where is the center of mass on a rod?
“If uniform, in the middle\nIf non-uniform, in a given place”
When a rigid body is on the point of tilting about a pivot, the reaction at any other support (or the tension in any other wire or string) is what?
0
