Paper 2

Question 1

Weight equation

Answer 1

Weight = Mass x Gravitational field strength

Question 2

Work done equation

Answer 2

WD = Force x Distance moved

Question 3

Extension equating

Answer 3

Force = Spring constant x extension

Question 4

Elastic Potential energy equation

Answer 4

Epe = 1/2 x spring constant x extension squared

Question 5

Moment equation

Answer 5

M = force x distance from pivot to the line of action of force

Question 6

Pressure equation (force…)

Answer 6

P= force
————-
Area of that surface

Question 7

Pressure equation ( column)

Answer 7

P = height of column x gfs x density of liquid

Question 8

Acceleration equation

Answer 8

A = change in velocity
—————————
Time

Question 9

Resultant force equation

Answer 9

Rf = mass x acceleration

Question 10

Force and momentum equation

Answer 10

Force = change in momentum
——————————
Change in time

Question 11

Momentum equation

Answer 11

Momentum = mass x velocity

Question 12

Wave speed equation

Answer 12

Wave speed = frequency x wavelength

Question 13

Magnification equation

Answer 13

M = image height
———————
Object height

Question 14

Size of a force (motor effect)

Answer 14

F = magnetic Flux density x current c length

Question 15

Transformer equation

Answer 15

Input PD No. Turns on p coil
————— = ————————
Output PD No. Turns on s coil