Chapter Chosen

Motion in A Plane

Book Chosen

Physics Part I

Subject Chosen

Physics

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12
Find the resultant of forces acting at a point:
(i)      200 square root of 2 space straight N  along NE
(ii)     space 500 square root of 2 space straight N  along NW
(iii)      800 N along south.

           

Given that, 

Force acting along NE = <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
#1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php(56): mkdir('/home/config_ad...', 493)
#2 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/FolderTreeStorageAndCache.class.php(110): com_wiris_util_sys_Store->mkdirs()
#3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...')
#4 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(59): com_wiris_plugin_impl_RenderImpl->computeDigest(NULL, Array)
#5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array)
#6 {main}</pre> 

straight F with rightwards harpoon with barb upwards on top subscript 2 space equals space 500 space square root of 2 space comma space along space NW

stack straight F subscript 3 with rightwards harpoon with barb upwards on top space equals space 800 space straight N space along space South

Now comma space resolving space the space rectangular space components
of space straight F with rightwards harpoon with barb upwards on top subscript 1 comma space straight F with rightwards harpoon with barb upwards on top subscript 2 comma space stack straight F subscript 3 with rightwards harpoon with barb upwards on top space along space straight x space and space straight y space axis space is space given space by comma space

straight F subscript 1 straight x end subscript space equals space 200 square root of 2 space cos space 45 to the power of straight o space equals space 200 space

straight F subscript 1 straight y end subscript space equals space 200 square root of 2 sin space 45 to the power of straight o space equals space 200

straight F subscript 2 straight x end subscript space equals space minus space 500 space square root of 2 space cos space 45 to the power of straight o space equals space minus space 500 space

straight F subscript 2 straight y end subscript space equals space 500 space square root of 2 space sin space 45 to the power of straight o space equals space 500 space

straight F subscript 3 straight x end subscript space equals space 800 space cos space 90 to the power of 0 space equals space 0

straight F subscript 3 straight y end subscript space equals space minus 800 space sin space 90 to the power of straight o space equals space minus 800 space

Therefore comma space

straight F subscript straight x space equals space straight F subscript 1 straight x end subscript plus straight F subscript 2 straight x end subscript space plus straight F subscript 3 straight x end subscript

space space space space space equals space 200 space minus space 500 space plus space 0 space

space space space space space equals space minus 300 space

and space straight F subscript straight y space equals space straight F subscript 1 straight y end subscript space plus space straight F subscript 2 straight y end subscript space plus space straight F subscript 3 straight y end subscript space

space space space space space space space space space space space space equals space 200 space plus space 500 minus 800 space

space space space space space space space space space space space equals space minus 100

Therefore comma space

Resultant space Force comma space straight F with rightwards harpoon with barb upwards on top space equals space minus space 300 space straight i with hat on top space minus space 100 space straight j with hat on top space

Magnitude space of space force comma space open vertical bar straight F with rightwards harpoon with barb upwards on top close vertical bar space equals square root of 300 squared plus 100 squared end root

space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 100 square root of 10 space straight N





198 Views

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views

What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors. 


814 Views

What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 Views

Give three examples of scalar quantities.

Mass, temperature and energy
769 Views