Register to reply

Is integration involved?

by pringless
Tags: integration, involved
Share this thread:
pringless
#1
Dec4-03, 08:01 PM
P: 46
A 4.1kg block moving along the x axis is acted upon by a single horizontal force that varies with the block's position according to the equation F_x = ax^2 + b, where a = 8 N/m^2, and b = -2.8 N. At 1.5 m, the block is moving to the right with a speed of 4.3 m/s. Determine the speed of the block at 2.8 m.

do i have to just integrate that formula?
Phys.Org News Partner Science news on Phys.org
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
thermodynamicaldude
#2
Dec4-03, 09:47 PM
P: 65
All that really needs to be done is to find the area underneath the curve of that equation. You can really just use any methods that please you to do this. The result would be the work done. Then set that work = the formula for kinetic energy and solve for velocity.

BTW, you're taking a physics course with calculus, right?


Register to reply

Related Discussions
Involved problem Introductory Physics Homework 9
Getting Involved In High School? Quantum Physics 0
Forces involved in an elevator Introductory Physics Homework 6
Mathematics involved in Aerodynamics Mechanical Engineering 7
The physics involved in soccer?HELP PLS Introductory Physics Homework 3