Jadaav Messages 175 Reaction score 1 Thread starter Dec 2, 2010 #1 When calculating the amount of work done, using the force applied and the displacement, does the weight of the object do anything ?
When calculating the amount of work done, using the force applied and the displacement, does the weight of the object do anything ?
NobodySpecial Messages 380 Reaction score 3 Dec 2, 2010 #2 It depends - work is force * distance. If you are lifting an object then the force is the weight. If the object is moving on a real surface then the friction force you need to overcome will depend on it's weight.
It depends - work is force * distance. If you are lifting an object then the force is the weight. If the object is moving on a real surface then the friction force you need to overcome will depend on it's weight.
tiny-tim Science Advisor Homework Helper Messages 25,837 Reaction score 258 Dec 2, 2010 #3 Hi Jadaav! Not unless the force depends on the mass (or weight) … for example, the https://www.physicsforums.com/library.php?do=view_item&itemid=75" by gravity depends on the weight, and the work done by https://www.physicsforums.com/library.php?do=view_item&itemid=39" , which (even on a slope) is proportional to the weight. Last edited by a moderator: Apr 25, 2017
Hi Jadaav! Not unless the force depends on the mass (or weight) … for example, the https://www.physicsforums.com/library.php?do=view_item&itemid=75" by gravity depends on the weight, and the work done by https://www.physicsforums.com/library.php?do=view_item&itemid=39" , which (even on a slope) is proportional to the weight.
Jadaav Messages 175 Reaction score 1 Dec 3, 2010 #4 Thanks both of you tw For now, I'm learning of work done without friction force. Can I have a website where you can learn work done involving 'friction' please ?
Thanks both of you tw For now, I'm learning of work done without friction force. Can I have a website where you can learn work done involving 'friction' please ?
dlgoff Science Advisor Gold Member Messages 4,458 Reaction score 3,265 Dec 3, 2010 #5 Jadaav said: Can I have a website where you can learn work done involving 'friction' please ? Try this one: http://hyperphysics.phy-astr.gsu.edu/hbase/fricon.html" Last edited by a moderator: May 5, 2017
Jadaav said: Can I have a website where you can learn work done involving 'friction' please ? Try this one: http://hyperphysics.phy-astr.gsu.edu/hbase/fricon.html"
Jadaav Messages 175 Reaction score 1 Dec 3, 2010 #6 Thanks, it sounds like an interesting site with a brainstorming in front.:)