FORCES

Question 1

Acceleration formula

Answer 1

A=Force/mass

Question 2

Centripetal force

Answer 2

Fc=(m)v²/r

Question 3

Centrifugal force

Answer 3

F=(m)v²/r

Question 4

Angular speed

Answer 4

w = v/r

Unit (rad/sec)

Question 5

Angular speed

Answer 5

w = v/r

Unit (rad/sec)

Question 6

Kinetic energy

Answer 6

KE = 1/2(m)(v²)

Question 7

Gravitational Potential Energy

Answer 7

GPE = mgh

Question 8

Mechanical Energy

Answer 8

PE¹+KE¹ = PEf+KEf

Question 9

Hooke’s law of elastic potential energy

Answer 9

K spring constant = F/X

Question 10

Momentum

Answer 10

Momentum = mv

Question 11

Change in momentum

Answer 11

Fnet = ∆P/∆t

Question 12

Collisions

Answer 12

M¹V¹+M²V²

Question 13

Dry Friction

Answer 13

F = uN

Question 14

Tan0 for dry Friction

Answer 14

F/N

Question 15

Resultant of coplanar concurrent ftce system

Answer 15

R = √Rx²+Ry²

Question 16

Cosine Law

Answer 16

c² = a² + b² - 2ab cos(c)

Question 17

Resultant of distributive load for a rectangle

Answer 17

R = WoL

Question 18

Resultant of distributive load for a triangle

Answer 18

R = 1/2WoL

Question 19

Resultant of distributive load for trapezoid

Answer 19

R = Wo¹L+1/2(Wo²-Wo¹)L

Question 20

(Rectilinear Translation)
Formula for motion with constant velocity

Answer 20

S = vt

Question 21

(Rectilinear Translation)
Motion with constant acceleration

Answer 21

Vf = Vi + at
S = Vit + 1/2at²
Vf² = Vi² + 2as

Question 22

Motion with variable acceleration

Answer 22

a = dv/dt
v = ds/dt
vdv = ads