What mechanical paramater has a unit corresponding to expression

In summary, the conversation discusses the unit of a Newton in SI units, which can be broken down into simpler units of measure and is equal to the force of F=ma. The correct answer to the question is impulse.
  • #1
helpme1
17
0

Homework Statement


What mechanical parameter has a unit corresponding to expression N2 sec3/kgm ?


Homework Equations


a.impulse b.time c.velocity d.energy e.force


The Attempt at a Solution


i need your help. please take a look this.
thanks in advance.
 
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  • #2
do you know what a Newton is in SI units?
 
  • #3
Force.
 
  • #4
helpme1 said:
Force.

no, a Newton is the unit of force but a Newton can be broken down into simpler units of measure. this is the equivalency:

[tex][N]=[\frac{Kgm}{s^2}][/tex] -(these are the units for F=ma)

This should make sense to you, F=ma. "m" is measured in Kg, "a" is measured in m/s^2. when you multiply the two you get a unit of Newton
 
  • #5
srmeier said:
no, a Newton is the unit of force but a Newton can be broken down into simpler units of measure. this is the equivalency:

[tex][N]=[\frac{Kgm}{s^2}][/tex] -(these are the units for F=ma)

This should make sense to you, F=ma. "m" is measured in Kg, "a" is measured in m/s^2. when you multiply the two you get a unit of Newton

thanks for your response. but then the answer of question is Force ? right.
 
  • #6
no, plug the SI expression for a Newton into the original expression, what units are left?
 
  • #7
impulse ?
 
  • #8
you got it! ^^
 
  • #9
ah thanks! :) you are helpful. i did it by thinking. at last i did a physics test my own (of course with your help)
 

Related to What mechanical paramater has a unit corresponding to expression

1. What exactly is a mechanical parameter?

A mechanical parameter is a variable that describes a physical property of a mechanical system, such as its size, shape, or motion.

2. How is a unit assigned to a mechanical parameter?

The unit of a mechanical parameter is determined based on the specific physical quantity it represents. For example, length would be measured in meters, mass would be measured in kilograms, and time would be measured in seconds.

3. What does it mean for a unit to correspond to an expression?

When a unit corresponds to an expression, it means that the units used in the expression are consistent with the units of the mechanical parameter being described. This is important for accurately measuring and understanding the physical properties of a system.

4. Can a mechanical parameter have more than one unit?

Yes, a mechanical parameter can have multiple units if it is a combination of different physical quantities. For example, velocity is measured in meters per second, which combines the units of length and time.

5. How are mechanical parameters used in scientific research?

Mechanical parameters are used in scientific research to quantify and analyze the physical properties of various systems. They help scientists understand how different forces and interactions affect the behavior and performance of mechanical systems.

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