Go Back   Physics Help Forum > High School and Pre-University Physics Help > Kinematics and Dynamics

Kinematics and Dynamics Kinematics and Dynamics Physics Help Forum

Reply
 
LinkBack Thread Tools Display Modes
Old Sep 10th 2012, 03:20 PM   #1
Junior Member
 
Join Date: Sep 2012
Posts: 1
Statics

This problem has stumped me greatly.

If the magnitude of the resultant force is to be 500N, directed along the positive y-axis, determine the magnitude of force F and its direction (theta).

The picture is on an x-y plane; there's a force 15 degrees below the negative x-axis and has a magnitude of 700N.

That's all the information the problem has given me.

Can someone please explain how I go about doing this?
Preston019 is offline   Reply With Quote
Old Sep 11th 2012, 06:04 AM   #2
Physics Team
 
ChipB's Avatar
 
Join Date: Jun 2010
Location: Morristown, NJ USA
Posts: 2,354
I'n guessing from your description that you have a force which I'll call F1 with magnitude 700N plus an unknown force F, and that these two forces added together result in a combined force R of 500N in the positive-y direction. In other words:

F1 + F = R

To find F simply subtract F1 from both sides:

F = R-F1

Please note that F, F1 and R are all vectors, so this requres vector subtraction. Can you finish it from here?
ChipB is offline   Reply With Quote
Reply

  Physics Help Forum > High School and Pre-University Physics Help > Kinematics and Dynamics

Tags
statics



Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
Fluid statics Samagra Kinematics and Dynamics 1 Dec 16th 2015 01:20 PM
Statics help suvadip Advanced Mechanics 9 Jan 10th 2014 12:03 PM
Statics Help DustyGeneral Equilibrium and Elasticity 2 Sep 24th 2012 06:34 AM
Statics Help dobe Equilibrium and Elasticity 3 Feb 6th 2010 07:07 AM
Statics problem Tulip007 Equilibrium and Elasticity 0 Oct 12th 2008 12:34 AM


Facebook Twitter Google+ RSS Feed