SailNet Community - View Single Post - Riddles with a Prize, by Mantus Anchors
View Single Post
  #61  
Old 11-20-2012
Mantus Anchors's Avatar
Mantus Anchors Mantus Anchors is offline
Senior Member
 
Join Date: Dec 2011
Posts: 164
Thanks: 4
Thanked 0 Times in 0 Posts
Rep Power: 3
Mantus Anchors is on a distinguished road
Re: Riddles with a Prize, by Mantus Anchors

The Jack in the Box
Jack weighs m
Box weighs M

So if you depress the head of the Jack and release it suddenly, it will pop up because of the spring between the Jack and the bottom of the box. How much force is required to depress the Jack so that both the Jack and the Box will jump up into the air? The mass of the Jack is m and the mass of the Box is M and the weight of the spring is negligible.
The spring is regular linear spring....

The PRIZE is MANTUS CHAIN HOOK that fits your chain size....
Attached Images
File Type: jpg HOOK AMAZON PIC jpg.jpg (7.9 KB, 0 views)
__________________
Anchor Purveyor
Reply With Quote Share with Facebook