Mechanics Year 2

Question 1

What MUST a you remember if a questions talks about strings?

Answer 1

There WILL be a tension force

Question 2

What MUST you remember about questions which talk about 1 or 2 strings?

Answer 2

1 string- tension is the same throughout the string- … you can simply denote tension as T
2 strings- tension is the same in each string but different between strings- … denote each tension as a different letter or as T1 and T2

Question 3

What MUST you remember about a question with motion or something moving?

Answer 3

USE F=MA
BUT REMEMBER when solving perpendicularly to a slope- no motion … don’t use F=MA but just resolve normally where you assume equilibrium therefore opposite forces equal

Question 4

What MUST you remember about a question where the forces don’t change?

Answer 4

ASSUME constant acceleration unless told otherwise … USE SUVAT

Question 5

What is a fulcrum?

Answer 5

Another word for pivot or support