0

Guest

Courses New

The resultant of two forces P and Q is equal to Q√3 and it makes an angle of π/6 with the direction of P. How do you show that P=Q or 2Q by parallelogram law

The resultant of two forces P and Q is equal to Q√3 and it makes an angle of π/6 with the direction of P. How do you show that P=Q or 2Q by parallelogram law

Grade:10

1 Answers

Harsha Vardhan Sai
22 Points
6 years ago
DEAR NAVDEEP,THIS ALSO INVOLVES A BIT  OF MATHEMATICIS SO MAKE A NOTE OF THIS
                                 FIRST DRAW A PARELELLOGRAM AND DRAW ITS DIAGONAL AND LABEL THEM.BY PARALELLOGRAM LAW OF VECTOR ADDITION R2=P2+Q2+2PQCOSA.
BUT GIVEN R=Q(3)1/2 BY SAS  PROPERTY Q2=P2-R2-2PRCOSA
ON SUBSTITUTING VALUES Q2=P2-3Q2-2PR(3)1/2*(3)1/2/2
P2+2Q2-3PQ=0
BY FACTORISATION
(P-Q)(P-2Q)=0
THEN P=Q OR P=2Q
HENCE PROVED 
 

Think You Can Provide A Better Answer ?

Other Related Questions on General Physics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More