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mash [69]
3 years ago
13

Mechanical advantage is always less than velocity ratio,why?​

Physics
1 answer:
sashaice [31]3 years ago
7 0

because mechanical advantage decreases due to the friction and weight of moving parts of the machine whereas the velocity ratio remains constant

hope it helps you

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) is it possible for one component of a vector to be zero, while the vector itself is not zero?
Natalka [10]
The least number of component of a vector quantity is two. These are the x-component and the y-component. 

The resultant vector, or vector as we refer to it in this item, can be calculated through the equation,
              RV = sqrt ((Vx)² + (Vy)²)

From the equation, it can be noted that if we let Vx equal to zero,
              RV = Vy

Similarly, if we let Vy be equal to zero then,
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Thus, it is still possible for the vector to become nonzero even if one of its components is zero. 
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3 years ago
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Answer:

In an elastic collision, the momentum is conserved and the mechanical energy is conserved too.

Explanation:

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- Inelastic collision: in an inelastic collision, the total momentum before and after the colllision is conserved, while the total mechanical energy is not conserved (in fact, part of the energy is converted into other forms of energy such that thermal energy, due to the presence of frictional forces)

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jeka57 [31]

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i had a question like this

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