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What is the polar form of torque

Posted by Hari Singh 8 years, 3 months ago

CBSE > Class 11 > Physics

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Posted by Dharmender Gupta 8 years, 3 months ago

CBSE > Class 11 > Physics

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difference between angular velocity and linear velocity

Posted by Ritesh Dansena 4 years, 6 months ago

CBSE > Class 11 > Physics

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Sia ? 4 years, 6 months ago

	Linear Velocity	Angular Velocity
Definition	We define the linear velocity as the rate of change of the linear displacement.	We define the angular velocity as the rate of change of angular displacement.
Key Differences	In a circular motion, the linear velocity of a particle is along the circumference of a circle. It is different at different points on the circle.	The angular velocity of a particle is along the axis of a circle. It remains the same throughout the circular motion.
Symbol	The symbol for the linear velocity is v.	The symbol for angular velocity is a Greek letter, i.e., ω (pronounced as omega).
Formula	v = ΔSΔt = 2πrt	ω = ΔθΔt = 2πrt
Quantity	It is a vector quantity that implies it has both magnitude & direction.	It is an axial vector. Its because the direction of the displacement of the particle is along the axis of the circle.
Measuring Unit	We measure the linear velocity in m/s.	We measure the angular velocity in both degrees and radians. A degree is a dimensionless unit. Radian is an SI unit.
Real-life Example	If your office is at 150 km distance from your home, then your car will acquire a linear velocity.

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i cant understand the topic - newton's second laq is the real law of motion

Posted by Ritesh Dansena 8 years, 3 months ago

CBSE > Class 11 > Physics

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Ayush Meena 8 years, 3 months ago

From Newton's second law first law and third

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The velocity of particle is given by v=(3i+6tj)m/s , where t is time in second , the equation of trajectory of particle is (assume , particle starts from origin)

Posted by Arunam Sharma 8 years, 3 months ago

CBSE > Class 11 > Physics

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If momenta of two different bodies are equal then find the relation between their kinetic energy?

Posted by Ajay Sah 8 years, 3 months ago

CBSE > Class 11 > Physics

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The correct relation between torque and moment of inertia is -

Posted by Vandana Amol 8 years, 3 months ago

CBSE > Class 11 > Physics

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What is vsctor

Posted by Karma Gyaltsen Lhasungpa 8 years, 3 months ago

CBSE > Class 11 > Physics

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Addya Sharma 8 years, 3 months ago

Vector is that quantity which has magnitude as well as direction..ex displacement

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What is scaler

Posted by Karma Gyaltsen Lhasungpa 8 years, 3 months ago

CBSE > Class 11 > Physics

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a gun has a mass of 30 tones.it fires a bullet whose mass is 450kg with a velocity of 300m/sec.1- calculate the initial velocity of gun recoil.2 - if a resistivity force of 600 KN is applied on gun on an average ,calculate the distance travelled by the gun during recoil.3-Also compute the time period..

Posted by Vishal Upadhyay 8 years, 3 months ago

CBSE > Class 11 > Physics

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If the distance covered is zero the displacemant

Posted by Chandraraj Patil 8 years, 3 months ago

CBSE > Class 11 > Physics

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Merra Goel 8 years, 3 months ago

If the distance is 0 than the displacement is 0

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A physical quantity p is related to form observable a b c and d p=a cube b cube ÷root c d

Posted by Gayathri Prakash 8 years, 3 months ago

CBSE > Class 11 > Physics

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A body rolled on ice with velocity of 8m/s &comes to rest after traveling 4m compute coefficient of friction

Posted by Rahul Baghel 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Aditya Kumar 4 years, 11 months ago

a body rolled on ice with velocity of 8m/s and comes to rest after travelling 4m compute coefficient of friction

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What is reductionism???

Posted by Zainam Algaz 8 years, 3 months ago

CBSE > Class 11 > Physics

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Amar Kumar 8 years, 3 months ago

Reductionism is breaking down of a complex system in to simple constituent systems to so that laws of physics can be applied on these systems and we can understand the working of the complex system.

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What is elastic collision

Posted by Abhishek Meena 8 years, 3 months ago

CBSE > Class 11 > Physics

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Amar Kumar 8 years, 3 months ago

An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision. Both momentum and kinetic energy are conserved quantities in elastic collisions.

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What is the error of 5+_3

Posted by Jayesh Shekhawat 8 years, 3 months ago

CBSE > Class 11 > Physics

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A body moving along x direction has at any instant its x cordinate given by x=a+bt+c(t×t) what will be acceleration of particle

Posted by Rahul Roy 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Ravi Kumar 8 years, 3 months ago

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Difference between gravitational and absolute unit of force.

Posted by Simran Singhal 8 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Rahul Sharma 7 years, 11 months ago

The absolute units of force don’t depend upon the value of acceleration due to gravity, so they remain the same throughout the universe. But the gravitational unit of force depend upon the value of ‘g’ which is different at different places.

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Amar Kumar 8 years, 3 months ago

The absolute units of force doesn't depend upon the value of acceleration due to gravity, so they remain the same throughout the universe. But the gravitational unit of force depend upon the value of 'g' which is different at different places.

The fundamental difference in convention is that in SI, the constant of proportionality is chosen to be 1, so you have: F = ma

In a gravitational system, acceleration is measured in units of g, so you have: F = m (a/g) This allows the same unit to be used for force and for mass.

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What is instantaneous speed

Posted by Archana Suman 8 years, 3 months ago

CBSE > Class 11 > Physics

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Amar Kumar 8 years, 3 months ago

Instantaneous speed is the scalar quantity speed is the distance travelled with respect to time. It shows how fast an object is moved.

Instantaneous speed is the motion rate of object at a particular time period or moment. If we take an example of a cheetah who is running with speed of 80 miles per hour then it is instantaneous speed because it is shown as in per hour speed.

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Why it is easy to pull than to push ?

Posted by Piyush Chhabra 8 years, 3 months ago

CBSE > Class 11 > Physics

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If vector A . Vector B = Vector A into vectorB find the angle between them

Posted by Sanchit Varshney 8 years, 3 months ago

CBSE > Class 11 > Physics

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Rahul Poddar 8 years, 3 months ago

A.B=A×B , IAI IBI COS○=IAI IBI SIN○ COS○=SIN○, ○=45° angle between them 45°

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Which is the self adjusting force (1)rolling friction (2)dynamic friction (3)limiting friction (4)static friction?

Posted by Sarita Sihag 8 years, 3 months ago

CBSE > Class 11 > Physics

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Aisha Malik 8 years, 3 months ago

Static friction

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Consider a uniform square plate of a side a and mass m . what is the moment of inertia of this plate about an axis perpendicular to its plane and passing through one of its corner?

Posted by Sarita Sihag 8 years, 3 months ago

CBSE > Class 11 > Physics

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For particles having masses m, 2m, 3m,4m are placed at the corners of a square of edge a . what is the gravitational force acting on a particle of mass m placed at the centre of the square?

Posted by Sarita Sihag 8 years, 3 months ago

CBSE > Class 11 > Physics

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What is absolute zero temperature

Posted by Priyanka Sharma 8 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Nishtha Hari 8 years, 3 months ago

It means temp in kelvin

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What is the dimensional formula of viscocity ?

Posted by Shubham Vaid 8 years, 3 months ago

CBSE > Class 11 > Physics

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Swarnali Mondal 8 years, 3 months ago

I guess it's [ML^-1T-1]

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What is dimensional formula of momentum ?

Posted by Arpan Jot 8 years, 3 months ago

CBSE > Class 11 > Physics

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Pratham Kochhar 8 years, 3 months ago

MLT^-1

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A ball.of mass 5kg strikes against a wall at an angle of 45* and is reflected at same angle. Find the change in momentum ¿

Posted by Kumar Ji 8 years, 3 months ago

CBSE > Class 11 > Physics

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show that newton's law of motion is the real law of motion

Posted by Sarge Kumar 8 years, 3 months ago

CBSE > Class 11 > Physics

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Pratham Kochhar 8 years, 3 months ago

first law of motion is derived from second law of motion.. we know that F=Ma....... Now F=0 From F=0 ...... a =0 Now in equation... v= u+ at v= u+ (0)t v= u

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What is gravity sensor explain me

Posted by Diljit Singh 8 years, 3 months ago

CBSE > Class 11 > Physics