Question

I've got three questions from trig subject

1. How many inches will the weight in the figure rise if the pulley of 8.46 inches is rotated through an angle of 63deg53min.

2. Though what angle, to the nearest minute must the pulley in number 1 be rotated to raise the weight 15in?

3. The rotation of the smaller wheel in the figure causes the larger wheel to rotate. Through how many degrees will the larger wheel rotate if the smaller on rotates through 80deg?

Answer 1

1.

Answer 2

3.

Answer 3

Please help

Answer 4

weight?

Answer 5

no there's no weight

Answer 6

use arc length

Answer 7

The formula I guess is S=theta*radius

Answer 8

so radius=arc length/theta?

Answer 9

either way

Answer 10

what do you mean?

Answer 11

you can use either formula, but you're given in degrees already so stick with it

Answer 12

you need to convert into minutes

Answer 13

okay. so the string is the arc?

Answer 14

it's 63.88

Answer 15

no

Answer 16

but it's 8.46

Answer 17

so what is 63.88? is it theta?

Answer 18

my bad, just change it to 8.46 inches!

Answer 19

okay noprob