Forces And Elasticity

Question 1

What is the formula for spring constant?

Answer 1

Force = spring constant x extension

Question 2

What is the units for spring constant?

Answer 2

Newtons per meters

Question 3

What is the formula for elastic potential energy?

Answer 3

0.5 x spring constant x extension2

Question 4

What is elastic deformation?

Answer 4

When the spring turns to original shape when force is removed

Question 5

What is in elastic deformation?

Answer 5

Spring stays deformed after force removed

Question 6

What are the steps for hooked law?

Answer 6

Make sure ruler is vertical and pointer is horizontal

Measure initial length of spring

Add 100g weight onto the hanger

Measure the extension with a ruler

Repeat by adding more weights

Calculate spring constant

Question 7

What is the independent variable for hooks law?

Answer 7

Force

Question 8

Describe the relationship between force and extension when spring has extended beyond limit of proportionality

Answer 8

Beyond proportionality, extension no longer proportional to force.

Question 9

Explain why the mark for 0 is slightly below the top of spring?

Answer 9

So we can measure extension

Question 10

How does the pointer make the measurement for length more accurate?

Answer 10

Makes it easier to read

Question 11

Explain why a jet pack moves upwards when water is forced downwards

Answer 11

There is an equal and opposite force acting on jet pack

There is a downwards force pushing down on the jet pack

Question 12

Suggest 2 properties that should be the same fur each spring.

Answer 12

Spring constant and original length