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Amar Kumar 8 years, 3 months ago
The canter of mass is a position defined relative to an object or system of objects. It is the average position of all the parts of the system, weighted according to their masses. For simple rigid objects with uniform density, the center of mass is located at the centroid.
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Amar Kumar 8 years, 3 months ago
Concurrent forces are defined as forces that pass through a common point.Concurrent forces are two or more forces whose lines of action intersect at the same point to cause rotation. The forces do not necessarily have to be applied
Concurrent force system is a set of two or more forces whose lines of action intersect at a point at the same time.
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Amar Kumar 8 years, 3 months ago
Let the object be stone when it is dropped from a moving vehicle to an observer on the ground, the stone follows a parabolic path, as it is a projectile with initial velocity the same as the velocity of train when dropped. However, the person who dropped it sees that it falls down in a straight line.
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Amar Kumar 8 years, 3 months ago
Impulse has the same units and dimensions (M L T−1) as momentum.
Impulse is defined as the integral of a force with respect to time. In other words the change in momentum is called Impulse. Formula of Impulse is Impulse = Force x Time Now Force = Mass x Acceleration
Dimensional Formula of Impulse= M1L1T-1 SI unit of Impulse is Ns
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Amar Kumar 8 years, 3 months ago
A thin layer on the surface of a solid or a liquid that is differentiated in some way from the underlying bulk material.
A monomolecular film of organic compounds forming on water or grain surfaces Surface tension is the elastic tendency of a fluid surface which makes it acquire the least .
The surface of the water behaves like an elastic film: the insect's feet cause indentations in the water's surface, increasing its surface area and tendency ...
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Sahdev Sharma 8 years, 3 months ago
Rate of change of angular momentum with time is equal to the torque of the force.
{tex}{dL\over dt}=\tau{/tex}
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Amar Kumar 8 years, 3 months ago
1 watt of power is equal to the 1joule energy consumed per second.
The watt (symbol: W) is a derived unit of power in the International System of Units (SI) defined as 1 joule per second and can be used to quantify the rate of energy transfer.
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