Question

Two rubber bands pulling on an object cause it to accelerate at 1.2 m/s^2.
a. What will be the object's acceleration if it is pulled by four rubber bands?
b. What will be the acceleration of two of these objects glued together if they are pulled be two rubber bands?

Answer 1

Assume the rubber bands have no mass and are identical so they supply the same force to the object. Newton's Second Law of motion says
F=ma where F is the net force acting on the object. solve for a

Answer 2

a=F/m

Answer 3

now what?

Answer 4

hello

Answer 5

Well what happens when you double the amount of force and keep all other values the same?

Answer 6

2F/m=2a=2(1.2m/s^2) ; you double the acceleration correct?

Answer 7

so this is proportionality question.

Answer 8

yeah which is why question b askes what happens if you double the mass

Answer 9

a) what happens to acceleration when you double the force
b) what happens to acceleration when you double the mass

Answer 10

b then gonna be F/2m=a

Answer 11

so doubling the mass halves the acceleration right?

Answer 12

so a) 2(1.2)
b) 1.2/2

Answer 13

symbolically dose not make sense to me. For both a and b.

Answer 14

I think I go it now thank very much.

Answer 15

welcome