CBSE > Class 11 > Physics | CBSE Board | Homework Help

It states that if two vectors A&B in such a way that they represent any two adjacent sides of the //gm both in magnitude as well as in direction starting from the same point then their resultant is given by the diagonal of the //gm both in magnitude as well as in direction starting from the same point.

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Centripetal acceleration

Posted by Tanya Pandey 8 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Manoranjan Singh 8 years, 2 months ago

Rate of change of tangential velocity is called centripetal acceleration

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What is centripetal acceleration

Posted by Kavita Kumari 8 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Amar Kumar 8 years, 2 months ago

Centripetal acceleration is the rate of change of tangential velocity The direction of the centripital acceleration is always inwards along the radius vector of the circular motion. The magnitude of the centripetal acceleration is related to the tangential speed and angular velocity as

{tex}{a_c} = {{{v_t}^2} \over r} = {w^2}r{/tex}

an object moving in a circle of radius r with constant angular velocity w, The tangential speed is constant, but the direction of the tangential velocity vector changes as the object rotates.

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A physical quantity x is calculated x=a2b2cd if percentage error in a , b, c, d, are 2%,1%,3%,4%respectivily.what is the percentage error in x

Posted by R C 8 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

R C 8 years, 2 months ago

17%

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how much has been dig inside the earth till now

Posted by Ankit Rai 8 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Rahul Poddar 8 years, 2 months ago

On the ground for coal earth dug three kilometres inside for gas earth dug twelve kilometres and in the sea for natural gas earth dug sixty kilometres inside

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A bar of length l , breadth b, thickness d ,when loaded at the centre by a load W sags by an amount given by ∆=Wl^3/4Ybd^3 , here Y is the Young's modulus can you please derive this

Posted by Adarsh Shukla 8 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

If all people of world go on their respective terrines/ tower and stand their then their be any change in the duration of day and if then how much ?

Posted by Kundan Patidar 8 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What

Posted by Tarun Chaudhary 8 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is center of mass

Posted by Aakash Yadac 8 years, 2 months ago

CBSE > Class 11 > Physics

3 answers

Sweta Bhati 8 years, 2 months ago

A hypothetical point where whole mass of a system is supposed to be concerned

1Thank You

Rohan Gautam 8 years, 2 months ago

It is point it is a point where n terms of the system is supposed to be concentrated such that if entire external force is supposed to be acting at centre of mass then straight line of motion of system remain unchanged

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Neha Yadav 8 years, 2 months ago

The point where whole mass of a body is concentrated .Actually there is no such point where whole mass of body is concentrated. It is used for study of macroscopic body.

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