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

Determine the magnitude of the force in direct current, The weightless trus...

The weightless truss shown below supports loads at point A & B and is fastened to the supports at C & E. The value of F1 in kN is given in P13 and the value of F2 in kN is given i

Classification of solid, what is classification of solid insulator , semico...

what is classification of solid insulator , semiconductor , conductor

Heat energy, how much water at 0degrees is needed to cool 0.5kg of water at...

how much water at 0degrees is needed to cool 0.5kg of water at 80degrees to 0degrees

What angle will the maximum horizontal distance be attained, Q. For project...

Q. For projectiles fired at identical speeds but a variety of angles from the ground, neglecting air resistance also the curvature of the Earth at what angle will the maximum horiz

What is the type of bonding in silicon, What is the type of bonding in sili...

What is the type of bonding in silicon? (A) Ionic. (B) Covalent. (C) Metallic. (D) Ionic + Metallic Ans: Bonding in silicon is covalent type.

Engineering materials and engineering materials properties, Engineers and t...

Engineers and technologist engage themselves in the design and manufacturing of machine like latches, engines, motors, generators, bulldozers etc. And in the fabrication of vehicle

Determine position vector, Determine where r is the position vector.

Determine where r is the position vector.

Ratio of specific charge of a proton and an alfa-particle, The ratio of sp...

The ratio of specific charge of a proton and an alfa-particle is: (1) 2 : 1 (2) 1 : 2 (3) 1 : 4 (4) 1 : 1 Ans:(1) 2 : 1

What is a mole? , It is the molecular weight of a substance expressed in gr...

It is the molecular weight of a substance expressed in grams ; the basic unit of amount of substance adopted under the Systeme International d''Unites.

Calculate the volumetric substrate utilization rate, Batch fermentation ...

Batch fermentation For aerobic cultivation of yeast the cell mass concentration, X t , and the concentration of the limiting substrate component (glucose), S t , has been deter

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

Determine the magnitude of the force in direct current, The weightless trus...

Classification of solid, what is classification of solid insulator , semico...

Heat energy, how much water at 0degrees is needed to cool 0.5kg of water at...

What angle will the maximum horizontal distance be attained, Q. For project...

What is the type of bonding in silicon, What is the type of bonding in sili...

Engineering materials and engineering materials properties, Engineers and t...

Determine position vector, Determine where r is the position vector.

Ratio of specific charge of a proton and an alfa-particle, The ratio of sp...

What is a mole? , It is the molecular weight of a substance expressed in gr...

Calculate the volumetric substrate utilization rate, Batch fermentation ...

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