Materials - topic 4

Question 1

What is elastic limit?

Answer 1

The point beyond which it the force is removed the material does not return to its original length.

Question 2

Origin of upthrust

Answer 2

Change in pressure: density of fluid x g x depth of object in the fluid.

Question 3

what does young modulus measure

Answer 3

stiffness of a material

Question 4

archimedes principle

Answer 4

upthrust of an object = weight of the fluid it displaces

Question 5

upthrust equation

Answer 5

U = density of fluid x gravity x volume of displaced fluid

Question 6

if the object is fully submerged what is displaced volume of fluid?

Answer 6

volume of object

Question 7

laminar flow