How Many Steps Are Visible on the Escalator When It's Shut Down?

[Fraulein]

A scientist is performing an experiment on an up-the-floor escalator in a mall. The scientist ran up the escalator and took 50 steps to reach the upper boom. Then, he ran back down the same escalator and took 125 steps to reach back the lower boom. The pace of the scientist going down is five times faster going up. How many steps are visible on the escalator if it is shutdown?

The problem is good for 15 minutes...or more! Haha! I'll post the solution and answer on Monday :) Happy solving!

 

[jedishrfu]

Welcome to PF!

Why do you think only a genius can solve it?

Also its easily found via google search.

 

[Evo]

Also, this is the "Introductions Only" sub-forum, as it states in the first post.

 

[Fraulein]

Uh-oh. I haven't been reading. My bad. Uhm, do i have to delete this post and move it to the threads? Sorry guys. >.< Regarding the question, it came from a book entitled "Problems in General Physics by I.E Irodov" which was our example problem in our class last Monday. I just felt sharing this bec most of my classmates had a hard time solving it and I googled it too! And haven't found a site with solutions on this problem. (or maybe I am just lame in Google-ing lol)

 

[Evo]

You're fine, no one reads my posts. It was a nice problem. Welcome to the forum!

 

[jedishrfu]

Oh no, i read your post should I now deny that I did and delete this post too to deny the denial? :-)

 

[Fraulein]

You're fine, no one reads my posts. It was a nice problem. Welcome to the forum!

Thank you ^^ I'll move it to the threads :)

 

[Mark44]

You're fine, no one reads my posts. It was a nice problem. Welcome to the forum!

I read some of them @Evo...

Anyway, I moved this thread.

 

[Fraulein]

I read some of them @Evo...

Anyway, I moved this thread.

Thank God, I'm having a hard time learning to post and the likes here. Thank you! :)

 

[jedishrfu]

Here's a reference to the book:

https://www.amazon.com/dp/8183552153/?tag=pfamazon01-20

 

[phinds]

You're fine, no one reads my posts.

Evo ... how can you say that? We all await your posts with bated breath

 

[Enigman]

Evo ... how can you say that? We all await your posts with bated breath

Who are you talking to?

 

[phinds]

Who are you talking to?

Not you, apparently.

 

[Enigman]

Not you, apparently.

Ah, keep at it then.