Questions
When two vectors of magnitudes P and Q are inclined at an angle , the magnitude of their resultant 2P. When the inclination is changed to 180-, the magnitude of the resultant is halved. Find the ratio of P to Q.
detailed solution
Correct option is A
R12 = (2P)2 = P2+Q2+2PQcosθ(P)2 = P2+Q2-2PQcosθAdding them 5P2 = 2P2+2Q2or 3P2 = 2Q2 ⇒ PQ = 23Talk to our academic expert!
Similar Questions
(N-1) identical forces of magnitude F act simultaneously on a particle each making an angle of with the preceding one, the resultant is
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
