Forces In Actions

Question 1

What is tension

Answer 1

Tension is a stretching force

Question 2

What is compression

Answer 2

Compression is caused by a squashing force

Question 3

What is elastic deformation

Answer 3

Elastic deformation is the ability for materials are able to return to their original shapes once force is removed

Question 4

What is plastic deformation

Answer 4

Plastic deformation is when objects retain their new shapes, even once force is removed

Question 5

What is Hookes law

Answer 5

Hookes Law states that the extension of a spring force is directly proportional to the force used to stretch the spring, provided that the limit of proportionality is not exceeded

Question 6

How to find force using spring constant and extension

Answer 6

F = k * x
(N) = (N/m) * (m)
Force = spring constant * extension

Question 7

What is the elastic limit

Answer 7

It is the maximum amount that an object can be stretched or squashed, that even when the force is removed, the object should still be able to go back to its original shape (elastic deformation)

Question 8

How do you plot the elastic limit on a graph

Answer 8

It is the point before the graph starts to curve

Question 9

What is the meaning of elastic potential energy

Answer 9

The amount of energy transferred to an object that has been stretched or squashed

Question 10

What is the formula for elastic potential energy

Answer 10

EPE = 1/2 * K * x^2

—> elastic potential energy = half of spring constant * extension squared

Question 11

What are the units of EPE

Answer 11

EPE = J
K = N/m
x = m