କାର୍ଯ୍ୟ ଓ ଶକ୍ତି (Work & Energy) 9th Class Physical Science Odia Medium || Part-4|| ଶକ୍ତି ସଂରକ୍ଷଣ||

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କାର୍ଯ୍ୟ କଣ?
ଯେତେବେଳେ ବସ୍ତୁ ଉପରେ ପ୍ରୟୋଗ କରାଯାଉଥିବା ବଳ ଦ୍ଵାରା ବସ୍ତୁର ବିସ୍ଥାପନ ସୃଷ୍ଟି କରେ ସେତେବେଳେ କାର୍ଯ୍ୟ ହୋଇଥାଏ |

ଯେତେବେଳେ ପ୍ରୟୋଗ କରାଯାଉଥିବା ବଳ ଏବଂ ବିସ୍ଥାପନ ସମାନ ଦିଗରେ ଥାଏ, ଏହା ଯୁକ୍ତାତ୍ମକ କାର୍ଯ୍ୟ ହୋଇଥାଏ, ଏବଂ ଯେତେବେଳେ ଭିନ୍ନ ଦିଗରେ, ଏହା ବିଯୁକ୍ତାତ୍ମକ କାର୍ଯ୍ୟ ହୋଇଥାଏ |
କାର୍ଯ୍ୟ = ବଳ x ବିସ୍ଥାପନ (ଯୁକ୍ତାତ୍ମକ କାର୍ଯ୍ୟ )
କାର୍ଯ୍ୟ = ବଳ (- ବିସ୍ଥାପନ) (ବିଯୁକ୍ତାତ୍ମକ କାର୍ଯ୍ୟ)



What is work?
Work is said to be done when the force applied to an object produces a displacement of the object.
 
When the direction of force applied and displacement is in the same direction, it is positive work done, and when in different directions, it is negative work done.
Work = Force x displacement (expression for positive work)
Work = Force (-displacement) (expression for negative work)
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