review 2 slksjk

Question 1

state how you have used it is a particle in your calculations?

Answer 1

allow us to assume the weight acts from the centre of mass of each object and ignore wind resistance and rotational forces

Question 2

state how you have used it is a light horizontal rod in your calculations?

Answer 2

we treat it as if it had no mass and therefore can assume it not only stays straight but that it has no weight and the tension is constant along the entire length

Question 3

what does light mean

Answer 3

light means it has no mass

Question 4

state how in calculations you have used the information that the string is inextensible

Answer 4

the fact allows us to assume tension is constant in all parts of the string and that the acceleration of two particles is the same

Question 5

SUGGEST TWO REFINMENTS that would make this model more realistic

Answer 5

extensible string
friction at pulley
height of string

Question 6

state one limatation of the model other than air resistance that could affect the accuracy of your answer

Answer 6

it does not take into account the Spin of the ball
it does not the size of the ball
G is not exactly 9.8