work done, elasticity

Question 1

work done equation

Answer 1

force x distance

Question 2

what is work done measured in

Answer 2

J - joules

Question 3

what happens to friction when work is done

Answer 3

-work done to overcome friction causes an increase in heat energy

Question 4

what does elastically deformed mean

Answer 4

if object returned to its original shape

Question 5

the extension of an elastic object is directly proportional to what

Answer 5

applied force

Question 6

once limit of proportionality has been exceeded:

Answer 6

• doubling force will no longer exactly double extension
• relationship becomes non linear
• force- extension graph stops being a straight line

Question 7

equation for force and what is it measured in

Answer 7

spring constant x extension

N/M