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

Grounding a positively charged electroscope, Grounding a Positively Charged...

Grounding a Positively Charged Electroscope While the positively charged electroscope is touched and its charge becomes grounded or neutralized this is depicted within the anim

Determine the natural frequency of system, A mass of 6 kg lies on a smooth ...

A mass of 6 kg lies on a smooth horizontal table, and is attached by a spring to a fixed point, as shown in the figure below. The spring has a stiffness of  375 N/m. (a). Determ

By what distance would the pin appear, Q. A small pin fixed on a table top ...

Q. A small pin fixed on a table top is viewed from above from a distance of 50 cm. By what distance would the pin appear to be raised if it is viewed from the same point through a

Kinetic and potential energy, Kinetic and potential energy: Energy can ...

Kinetic and potential energy: Energy can exist in of 2 main forms. Kineti c energy is the kind of energy you probably think of right away when you imagine the energy. A pers

Determine the concept of beam of light, When a certain beam of light falls ...

When a certain beam of light falls upon a metal surface, it ejects photoelectrons from it.  The number of photoelectrons ejected per second by the beam of light depends upon on

Optical rotation, expression of optical rotation based on his assumptions

expression of optical rotation based on his assumptions

Daltons law of partial pressures, Dalton's law of partial pressures (J. Dal...

Dalton's law of partial pressures (J. Dalton) The overall pressure of a mixture of ideal gases is equivalent to the total of the partial pressures of its components; i.e., the

UNIVERSE, UNIVERSE

UNIVERSE

Who manufactures optical ports, Who manufactures optical ports?  All sy...

Who manufactures optical ports?  All system integrator generate a particular type of optical port to attach to their choice of illuminator.

Evaluate the maximum change in the period, The variable period of a moon of...

The variable period of a moon of Jupiter, which is the basis of measurement of the speed of light in Roemer's method (whoever heis), is regarded as the Doppler affect. The period o

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