Drop (inches) to achieve 10fps Velocity

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SUMMARY

The discussion centers on calculating the drop distance required for a 225 lbs object to achieve a velocity of 10 feet per second (fps) when dropped from a height of 12 feet, suspended by two cables. The solution involves using the basic equations of motion, specifically relating final velocity (Vf), acceleration (a), and distance (d). The acceleration due to gravity must be considered, with the option to use either the metric value of 9.81 m/s² or the US value for gravitational acceleration. Participants are encouraged to clarify the problem statement and apply the appropriate formulas for accelerated motion.

PREREQUISITES
  • Understanding of basic physics concepts, particularly kinematics
  • Familiarity with equations of motion, including Vf = Vi + at and d = Vi*t + 0.5*a*t²
  • Knowledge of gravitational acceleration values (9.81 m/s² or US standard)
  • Ability to convert units between imperial and metric systems
NEXT STEPS
  • Research the kinematic equations for uniformly accelerated motion
  • Learn how to convert between imperial and metric units effectively
  • Explore the concept of gravitational acceleration in different contexts
  • Practice solving problems involving free fall and terminal velocity
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of motion and gravitational effects on falling objects.

Al U. MaCraft
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Homework Statement



Ram/Ballistic = 6 Foot long 225 lbs

Suspended 12 Feet by 2 Cables


Homework Equations



Drop required to achieve 10 fps Velocity at lowest point?

The Attempt at a Solution



= 10*10 / 5.36
 
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Welcome to PF!
The question isn't entirely clear to me - is it just an object dropping distance d from initial speed zero and final speed 10 ft/s?
If so, you need an accelerated motion formula relating Vf, a, and d. If you can't find one like that, you can use the two basic accelerated motion formulas for v and d to find the time and then the distance. Also, you must either convert everything to metric units and use a = 9.81 m/s² or else find the US value for the acceleration of gravity. Try putting that together and show us how far you get!
 

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