P5: HOOKE'S LAW

Question 1

What is tension?

Answer 1

when 2 forces act in opposite directions on an object, away from each other

Question 2

What is compression?

Answer 2

when 2 forces act in opposite directions on an object, towards from each other

Question 3

What is direct proportion?

Answer 3

as one variable increases the other variable will also increase by the same ratio

Question 4

What is elastic deformation?

Answer 4

occurs when an object CAN return to its original shape after being stretched

Question 5

What is Hooke’s law?

Answer 5

the extension of a spring is directly proportional to the force applied provided the elastic limit is not exceeded

Question 6

What is inelastic/plastic deformation?

Answer 6

occurs when an object CANNOTW return to its original shape after being stretched

Question 7

RP - Hooke’s law

Answer 7

-hang a spring from a clamp stand
-measure the initial length of the spring using a ruler
-add a 200g mass (force of 2N) to the end of the spring
-measure the final length of the spring using a ruler
-calculate the extension of the spring (final length - initial length)
-repeat, adding 200g mass (force of 2N) each time until reach a force of 10N

Question 8

RP - Hooke’s law
What are the variables?

Answer 8

IV - mass/force applied
DV - extension of the spring
CV - spring constant

Question 9

What equation links force, spring constant and extension?

Answer 9

force (N) = spring constant (N/m) x extension (m) (F = ke)

Question 10

What equation links stored elastic energy, spring constant and extension?

Answer 10

stored elastic energy (J) = 0.5 x spring constant (N/m) x extension^2 (m) (Ee = 0.5ke^2)