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Ask QuestionPosted by Shreekanth Gumashetti 6 years, 5 months ago
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Sia ? 6 years, 5 months ago
- Effect of stress.
- Effect of annealing.
- Change in temperature.
- Presence of impurities.
- Due to the nature of crystals.
Posted by Muskan Singh 6 years, 5 months ago
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Pujitha A 6 years, 5 months ago
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Posted by Taniksha Nayal 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
| Mass | Weight |
| Mass is simply the measure of the amount of matter in a body. | Weight is the measure of the amount of force acting on a mass due to acceleration due to gravity. |
| Mass is denoted by “M”. | Weight is denoted by “W”. |
| Mass = volume × density | Weight = mass × acceleration due to gravity |
| Mass is a base quantity. | Weight is a derived quantity. |
| Mass only has magnitude and so, it a scalar quantity. | Weight has both magnitude and direction (towards the center of gravity) and so, it is a vector quantity. |
| The SI unit of mass is Kilogram (Kg). | The SI unit of weight is Newton (N). |
| Mass does not depend upon gravity and is constant everywhere. | Weight is dependent on the gravity and so, it varies from place to place. |
| Mass can never be zero. | Weight can be zero where there is no gravity (like space). |
| Mass can be easily measured using any ordinary balance like beam balance, lever balance, pan balance, etc. | Weight can be measured by a spring balance or by using its formula. |
Posted by Anwaya Nayak 6 years, 5 months ago
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Mahi ✌?? 6 years, 5 months ago
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Mahi ✌?? 6 years, 5 months ago
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Posted by Gurman Brar 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
Δt=time , displacement =Δx
Therefore, shearing stress =Δx/l where l= length
Strain rate=Δx/lΔt
η=shearing stress/strain rate
(F/A)/(Δx/lΔt) = (Fl)/vA where Δx/t=v
Therefore η=(Fl)/ vA
Posted by Zakiya Khan 6 years, 5 months ago
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Sia ? 6 years, 5 months ago
{tex}= \left[ M ^ { - 1 } T ^ { - 2 } L ^ { 3 } \right] {/tex}
Posted by Shri Krishan 6 years, 5 months ago
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Posted by Mohd Shawez 6 years, 5 months ago
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Posted by Aakash Kumar 6 years, 5 months ago
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Sia ? 6 years, 5 months ago
In order to maintain uniform circular motion of a particle, a force is needed because uniform circular motion is an accelerated motion. The force is known as the centripetal force. Thus, centripetal force is the force required in order to make an object move along a circular path with uniform speed. The force acts along the radius and is directed towards the centre of circular path.
We know that centripetal acceleration of a particle moving with a constant speed v along a circle of radius r is given by
{tex}a _ { c } = \frac { v ^ { 2 } } { r }{/tex}
Hence, according to Newton's second law of motion, for a particle of mass m, we have
The centripetal force F = mac = {tex}\frac { m v ^ { 2 } } { r }{/tex}
As v = r{tex}\omega{/tex}, where {tex}\omega{/tex} is the angular velocity of the particle, then
F = {tex}\frac { m } { r } ( r \omega ) ^ { 2 } = m r \omega ^ { 2 }{/tex}
Posted by Mahima Singh 6 years, 5 months ago
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Aakash Kumar 6 years, 5 months ago
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