(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A particle is dropped from rest, at the surface, into a tank containing oil

The acceleration of the particle in the oil is a = g – kv

where g is the gravitational acceleration and –kv being denoted by

the resistance put on the particle by the oil.

Solve for x as a function of time!

3. The attempt at a solution

I'm attaching an image file containing my calculations.

As can be seen I get a differential equation of the second order

but as I proceed to solve this equation and try to determine the

constants the whole thing turns into ZERO?!!?! What am I doing wrong??

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Need HELP! equation of motion with variable acceleration

**Physics Forums | Science Articles, Homework Help, Discussion**