User Account

All Pages

Vectors, Physics

Assignment Help:

The resultant of two forces 3P and 2P is R. If the first force is doubled then the resultant is also doubled. then the angle between the two forces us. plz xplain with the solution?
Ans)
r2=9p2+4p2+2.6p2cosθ....................1

4r2=(6p)2+4p2+2.12cosθ..................2

dividing 2 from 1

4=(36+4+24cosθ)/(9+4+12cosθ)

9+4+12cosθ=10+6cosθ

6cosθ=-3

cosθ=-0.5

θ=120degree

Related Discussions:- Vectors

What is eddy current?, The current induced in the conductor due change in ...

The current induced in the conductor due change in magnetic field is called eddy current.we study more about this in electro magnetic laws.

Explain interference of waves, Interference of waves: When two waves of...

Interference of waves: When two waves of similar amplitude and period traveling in the similar medium superpose, they reinforce each other at one point and cancel at others. Th

Determine the total circuit resistanc, Two resistors, of resistance 3 and ...

Two resistors, of resistance 3 and 6, are connected in parallel across a battery having a voltage of 12V. Determine (a) The total circuit resistance and (b) The current ?

Describe features of wave motion , a) It is a sort of disturbance which goe...

a) It is a sort of disturbance which goes by a medium. b) Material phase is necessary for the propagation of mechanical waves. c) When a wave motion goes by a phase, molecule

Find the payback period, Your company's cost of capital is 12%. You are cur...

Your company's cost of capital is 12%. You are currently evaluating three projects that have the following cash flow streams: a.  Find the payback period, discounted paybac

Explain eye chamber and its working, Eye Chamber: The ball is separated...

Eye Chamber: The ball is separated into two chamber, the aqueous chamber and the vitreous chamber. Working: Parallel rays from an object converged by the eye lens and b

Explain conductor, Conductor: Conductors are those substances which per...

Conductor: Conductors are those substances which permit electric current to passes easily by them. e.g. Metal, impure, water etc.

The position-time graph for two joggers, The position-time graph for two jo...

The position-time graph for two joggers, A and B, is shown in the accompanying figure a. How far apart are the two runners at 10.0 min? 1.50 km b. At what time ar

What are the favorable conditions for formation of cat ions, There are seve...

There are several conditions for formation of cat ions ? Low Ionisational potential ? Lesser Charge ? More atomic size of atoms forms cations easily ? Ions having Inert

Determine the value of vector field, Determine the value of ‘a' for which t...

Determine the value of ‘a' for which the vector field  is solenoidal.

3/9/2013 5:23:12 AM

case 1, R2=(3P)2+(2P)2+2*3*2*P2*cosΘ = 9P2+4P2+12P2cosΘ = 13P2+12P2cosΘ ----->(1)

case 2, (2R)2=(6P)2+(2P)2+2*6*2*P2*cosΘ ; 4R2=36P2+4P2+24P2cosΘ = 40P2+24P2cosΘ ------->(2)

Multiply (1) by 4; 4R2=52P2+48P2cosΘ ------>(3)

(3)-(2) gives, 0=12P2+24P2cosΘ

Therefore, cosΘ = (-1/2) => Θ = cos-1(-1/2) = 120°

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd