Senin, 05 Agustus 2013

Find the time it takes to mow a football field with a lawn mower that mows in 24 inches for width?

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chris b


A physics problem I can not seem to solve...if you can help please give it step by step not just an answer...no values are given for rate or time, just the fact that the lawn mower cuts the grass in 24 inches length...


Answer
It's clearly not enough information to solve the problem.

What else do you need ? (I'll just make up some numbers)
Size of field: 50 yds by 100 yds
50 yds / (2/3 yd) = 75 = # passes up and down the field.

Assuming perfect coverage - no gaps or overlaps
and no time taken for turning around:

If it's a motorized mower and travels 6 mph.
6 * 1760 yds per hour = 176 yards per minute
7500 total yards to move / 176 = 42.6 minutes

If it's a guy pushing a mower at 2 mph,
then 3 x as long: 128 minutes (roughly) 2 hours 8 minutes.

Maybe they want a general formula:

(width of field / 24") * (length of field) * speed of mower
(50 x 36 / 24) x 100 yds / 176 yds per minute) =
75 x 100 x 100 / 176 = 42.61
=

How much would a 1968 sears lawn mower cost?




Lil'Brit


Your Open Question: I have a 1968 sears lawn tractor how much would it be worth?

Just wanna know how much this 1968 sears lawn tractor would be worth. Almost fully original and looks great!



Answer
not much at all, probably no more than $200. its not a car or anything collectable and will not gain any value because of old it is, if its that old even if its barely used is almost done for, small engines don't have a very long life expectancy.




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