Simple Mechanics HELP!!:(

[bad at math guy]

These two questions have me stumped its a bit more of a physics question but maybe someone out there will look at this and giggle at the solutions simplicity... that seems to elude me

These questions are in regards to a simple wheel axle pulley system.. imagine an axle mounted at 2 points and a weight attached to the axle by a rope, this weight is then lifted by cranking on the larger wheel attached to the axle ( i can upload a picture if required).

1. If a wheel has a diameter of 50.000 cm and a mechanical advantage of 120.000, calculate the diameter of the axle. (Round to 3 decimal places)



2. A wheel and axle arrangement has an axle with a diameter of 25 cm. A rope is wrapped around the axle and is supporting a load of 2 tonnes


A) If the mechanical advantage of the system is 30, determine the diameter of the wheel. ans in m
B) Determine the effort required to maintain the system in equilibrium. ans in N

If more info is required let me know

 

[Deleted member 4993]

These two questions have me stumped its a bit more of a physics question but maybe someone out there will look at this and giggle at the solutions simplicity... that seems to elude me

These questions are in regards to a simple wheel axle pulley system.. imagine an axle mounted at 2 points and a weight attached to the axle by a rope, this weight is then lifted by cranking on the larger wheel attached to the axle ( i can upload a picture if required).

1. If a wheel has a diameter of 50.000 cm and a mechanical advantage of 120.000, calculate the diameter of the axle. (Round to 3 decimal places)

mechanical advantage = (Wheel Dia.)/(axle dia.)

2. A wheel and axle arrangement has an axle with a diameter of 25 cm. A rope is wrapped around the axle and is supporting a load of 2 tonnes

mechanical advantage = (Wheel Dia.)/(axle dia.)

A) If the mechanical advantage of the system is 30, determine the diameter of the wheel. ans in m

mechanical advantage = (Wheel Dia.)/(axle dia.)

B) Determine the effort (Force) required to maintain the system in equilibrium. ans in N

Force * dia of the wheel = load * dia. of the axle

If more info is required let me know

Use the equations as indicated in red.

Please share your work with us .

If you are stuck at the beginning tell us and we'll start with the definitions.

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[bad at math guy]

Thank you for the formulas, however my problem still exists as i am missing either the axle or wheel diam

 

[Deleted member 4993]

Thank you for the formulas, however my problem still exists as i am missing either the axle or wheel diam

You are not reading your problem correctly!!

1. If a wheel has a diameter of 50.000 cm and a mechanical advantage of 120.000, calculate the diameter of the axle. (Round to 3 decimal places)

mechanical advantage = (Wheel Dia.)/(axle dia.)

In this problem wheel diameter is given, the mechanical advantage is given and

you need to calculate the axle diameter!!!

 

[bad at math guy]

Thank you for the help