Year 1 Mech

Question 1

What’s the assumption for a smooth pulley?

Answer 1

Tension on either side of the pulley is equal

Question 2

What’s the assumption for a light string?

Answer 2

Tension is equal throughout the string

Question 3

What’s the assumption for an inextensible string?

Answer 3

Both particles have same acceleration

Question 4

What’s the assumption for a rod?

Answer 4

Rigid so it doesn’t bend and has no thickness

Question 4

What’s the assumption for a particle?

Answer 4

Ignore air resistance and rotational effects