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Grade: 11
        
Question is based on cross product. it is attached.
3 years ago

Answers : (3)

dipika kumari Sahoo
17 Points
							
while writing in vector form you will see it has FsSin@ (where @=theta angle). so while using i vector or j vector or k vector the whole sign changes so -that is the significance of writing in that form .
3 years ago
Naveen Shankar
31 Points
							
no the question is how do we know, for example calculate torque. F=2i+3j and r=4i. so is it F cross r or r cross F and how do we decide which is correct. According to the question they used F x r so how do we know this for other examples.
3 years ago
Manas Shukla
102 Points
							
Torque is always r x F and never F x r . If the answer in your book is given for F x r then it is wrong.
The example u gave torque should be -12k
 
3 years ago
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  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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