P5 forces

Question 1

what is the Equation for weight

Answer 1

Weight (N) = Mass(kg) x Gravitational field strength(N/kg)

Question 2

name 7 common forces?
which are Contact and non-contact?

Answer 2

-friction (C)
-air resistance (C)
-gravitational (NC)
-normal contact force (C)
-electrostatic (NC)
-magnetic (NC)
-tension (C)

Question 3

what is hooke’s law?

Answer 3

the FORCE on a spring if directly proportional to the EXTENSION (as long as the elastic LIMIT is not exceeded)

Question 4

what is elastic deformation?
is it directly proportional?

Answer 4

occurs when an object CAN return to it’s original shape after being stretched, (during this period deformation is directly proportional)

Question 5

what is plastic deformation?
is it directly proportional?

Answer 5

occurs when an object CANNOT return to it’s original shape after being stretched,(during this period deformation is NOT directly proportional)

Question 6

what is tension?

Answer 6

2 forces act in opposite directions AWAY from each other

Question 7

what is compression?

Answer 7

2 forces act in opposite directions TOWARDS each other