Year 2 Mechanics

Question 1

Acceleration of horizontal projectile

Answer 1

0

Question 2

Hotizontal component of intitial verlocity

Answer 2

Ucosx

Question 3

Vertical componeent of initial verlocity

Answer 3

Usinx

Question 4

Time of flight formula projectiles

Answer 4

2Usinx / g

Question 5

Time to reach greatest height formula projectiles

Answer 5

Usinx / g

Question 6

Range on horizontal plane formula projectiles

Answer 6

U^2 sin2x / g

Question 7

Equation of trajectory formula projectile’s

Answer 7

y = x tan(alpha) - gx^2 ((1+tan^2 (alphas)) / 2U^2)

Question 8

For moments, what do you use sin or cos?

Answer 8

Moving away from the angle = sin (moveSaway)
Moving towards the angle = cos
(cowards)

Question 9

What is a moment measured in?

Answer 9

Nm

Question 10

What is the sum of the moments acting on a body called?

Answer 10

the resultant moment

Question 11

What are coplanar forces?

Answer 11

Forces which act in the same plane

Question 12

What do we know about a rigid body in equilbrium?

Answer 12

resultant force in any direction = 0N

resultant moments about any point = 0Nm

Question 13

Where is the center of mass on a rod?

Answer 13

If uniform, in the middle

If non-uniform, in a given place

Question 14

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?

Answer 14

0