Vectors, The resultant of two forces 3P and 2P is R. If the first force is doubled then, Physics

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

Are machines with the ce mark certified, Are machines with the CE mark cert...

Are machines with the CE mark certified? The CE mark was a good concept in its inception but this has been so much abused which has become practically meaningless for the end u

Surface polarization charge, An atom is said to be polarized if it possess...

An atom is said to be polarized if it possesses and effective dipole moment, that is, if there is a separation between the centres of negative and positive charge distribution. It

Situation of the converging lens - principle ray III, Principle Ray III . P...

Principle Ray III . Preliminary from the head of the arrow that the object is ray III travels directly toward the focal point on the other side of the lens. However at the plane of

What is incorrect with the way, A person is determining the description of ...

A person is determining the description of the image formed by a converging lens by implies of a ray tracing diagram. The person has gotten so far as drawing one principal ray. Wha

Optics, determination of suger concentration in water by refractive index

determination of suger concentration in water by refractive index

The number of electrons in one molecule of are, The number of electrons in ...

The number of electrons in one molecule of are: (1)22 (2)44 (3)66 (4)88 Ans: 22

Newton law, what is newton first law of motion

what is newton first law of motion

Functions, Define the function f(x)=2x/1-x^2. Find the number of distinct r...

Define the function f(x)=2x/1-x^2. Find the number of distinct real solutions of the equation f^(5)(x)=x. Details and assumptions f^(n)(x) denotes the function f applied n times. I

Determine and plot the ratios , Determine and plot the ratios μtr/μ and μab...

Determine and plot the ratios μtr/μ and μab/μ from 5 keV to 100 MeV for (a) air, (b) water, (c) muscle, (d) bone, and (d) lead. Use the excel data file and use lo

Xray interaction with matter, how do higher energy levels in our xray beam ...

how do higher energy levels in our xray beam affect the photoelectric effect

3/9/2013 5:23:12 AM case 1, R²=(3P)²+(2P)²+232P²cosΘ = 9P²+4P²+12P²cosΘ = 13P²+12P²cosΘ ----->(1) case 2, (2R)²=(6P)²+(2P)²+262P²cosΘ ; 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°

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!

Name

Email id

Message

Verfication Code

User Account

All Pages

Vectors, Physics

Related Discussions:- Vectors

Are machines with the ce mark certified, Are machines with the CE mark cert...

Surface polarization charge, An atom is said to be polarized if it possess...

Situation of the converging lens - principle ray III, Principle Ray III . P...

What is incorrect with the way, A person is determining the description of ...

Optics, determination of suger concentration in water by refractive index

The number of electrons in one molecule of are, The number of electrons in ...

Newton law, what is newton first law of motion

Functions, Define the function f(x)=2x/1-x^2. Find the number of distinct r...

Determine and plot the ratios , Determine and plot the ratios μtr/μ and μab...

Xray interaction with matter, how do higher energy levels in our xray beam ...

Write Your Message!

Featured Services

Online Tutoring

Project Development

Exam Preparation

Course Help

Assignment Help

Popular Subjects

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT