force of falling object

Try to post your problem here, there is a chance, someone clever will help you.
Forum rules
Dear convert-me.com forum visitors,

Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.

All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page

Thank you for being with us and sorry for any inconveniences this could caused.

force of falling object

Postby jmpal » Wed Jan 19, 2011 8:56 am

If a 5 lb block of ice fell from 30' how much force would it have on impact?
jmpal
 

Re: force of falling object

Postby Guest » Mon Jan 09, 2012 7:14 am

2012.1.8
F=Mass x Accel

free falling body, uniform acceleration (Newton's 2nd Law) F=mg (g = gravitational field strength)

So, from physics we can use the formula for constant acceleration: x - x0 = v0 * t + 1/2 a*t*t


velocity = v = sqrt(2gh)
time = t = sqrt(2h/g)

v= sqrt(2 x 32 ft/s/s x 30 ft) = 43.81 ft per sec
t= sqrt(2 x 30 / 32) = 1.369 sec

From these formulas, an object would take 1.37 seconds to fall 30 feet, and would be traveling 43.8 ft/s when it gets there.
F = 5 lbs x 43.8 ft/s = 219 pound-force (lbf)
Guest
 


More info

  • List of all units you can convert online
  • Metric conversion
  • Convert grams to cups
  • Grams to milliliters
  • Imperial vs US Customary
  • History of measurement
  • Return to Other math problems

    Our Privacy Policy       Cooking Measures Converter       Metric conversions