Chapter Chosen

Laws of Motion

Book Chosen

Physics Part I

Subject Chosen

Physics

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

An arrangement of three parallel straight wires placed perpendicular to plane of paper carrying same current ‘I’ along the same direction is shown in Fig. Magnitude of force per unit length on the middle wire ‘B’ is given by

  • fraction numerator straight mu subscript straight o straight I over denominator 2 πd end fraction
  • fraction numerator 2 straight mu subscript straight o straight I over denominator πd end fraction
  • fraction numerator square root of straight mu subscript straight o straight I end root over denominator πd end fraction
  • fraction numerator straight mu subscript 0 straight I squared over denominator square root of 2 πd end fraction

D.

fraction numerator straight mu subscript 0 straight I squared over denominator square root of 2 πd end fraction

Force between BC and AB will be same in magnitude.



straight F subscript BC space equals straight F subscript BA space equals space fraction numerator straight mu subscript 0 straight I squared over denominator 2 πd end fraction
straight F space equals space square root of 2 straight F subscript BC
space equals space square root of 2 fraction numerator straight mu subscript 0 straight I squared over denominator 2 πd end fraction
straight F space equals space fraction numerator straight mu subscript 0 straight I squared over denominator square root of 2 πd end root end fraction

Force between BC and AB will be same in magnitude.



straight F subscript BC space equals straight F subscript BA space equals space fraction numerator straight mu subscript 0 straight I squared over denominator 2 πd end fraction
straight F space equals space square root of 2 straight F subscript BC
space equals space square root of 2 fraction numerator straight mu subscript 0 straight I squared over denominator 2 πd end fraction
straight F space equals space fraction numerator straight mu subscript 0 straight I squared over denominator square root of 2 πd end root end fraction

1827 Views

State Galileo’s law of motion.

Galileo’s law of motion states that, a body continues to move in the same direction with constant speed, if no force is acting on the body. 
1332 Views

When the branches of an apple tree are shaken, the apples fall down. Why?

The apple fall from an apple tree when it shaken because of inertia of rest. Apple is in a state of rest and when the tree is suddenly shaken, apples still tends to remain in it's same state of rest whereas branches move. 

So, the apples fall down. 
1475 Views

Is Aristotle’s law of motion now correct?

No. Aristotl'e law of motion is false. 
1233 Views

What is Aristotle’s law of motion?

Aristotle’s law of motion states that an external force is required to keep the body in motion.
2445 Views

Define inertia.

The property by virtue of which the body cannot change its state of rest or uniform motion in a straight line, unless an external force is acting on the body is called as Inertia. 
1316 Views