I What Unit Results from Dividing Joules per Kilogram by Meters?

  • I
  • Thread starter Thread starter Timothy Schablin
  • Start date Start date
  • Tags Tags
    Unit
AI Thread Summary
Dividing 1 Joule per kilogram by 0.5 meters results in a calculation for gravitational acceleration. The discussion explores whether the resulting unit is N/kg and clarifies that a Newton can be expressed in terms of kg, m, and s. The calculation indicates that gravity on the hypothetical planet is 2 m/s². However, there is confusion about expressing this result in N/kg, as the participants debate the correct unit representation. Ultimately, the focus is on understanding the relationship between energy, mass, and gravitational force.
Timothy Schablin
Messages
17
Reaction score
0
What unit would i end up with if i divide 1 Joules/kg by .5 meters?

Would it be N/kg?
 
Physics news on Phys.org
What is a Newton in terms of kg, m and s?
 
ya. N/kg doesn't sound right. Its for finding the gravity on planet X. If the object has 1 J/kg of gravitational potential at .5 meters from the surface, what is the gravity on that planet?

So Vg = gy so g = V/y. So, 1/.5 = 2

The gravity on that planet is 2 m/s? But they want the answer in N/kg, but that doesn't sound right.
 
Re-arrange f=ma and what units do you get that equal N/kg?
 
Let me ask again. What is a Newton in terms of kg, m and s?
 

Thread 'The Effect of Linear and Rotational Motion on Measured Weight'

Consider an extremely long and perfectly calibrated scale. A car with a mass of 1000 kg is placed on it, and the scale registers this weight accurately. Now, suppose the car begins to move, reaching very high speeds. Neglecting air resistance and rolling friction, if the car attains, for example, a velocity of 500 km/h, will the scale still indicate a weight corresponding to 1000 kg, or will the measured value decrease as a result of the motion? In a second scenario, imagine a person with a...
View full post »

Thread 'Coulomb gauge implies instantaneous radial electric field?'

Scalar and vector potentials in Coulomb gauge Assume Coulomb gauge so that $$\nabla \cdot \mathbf{A}=0.\tag{1}$$ The scalar potential ##\phi## is described by Poisson's equation $$\nabla^2 \phi = -\frac{\rho}{\varepsilon_0}\tag{2}$$ which has the instantaneous general solution given by $$\phi(\mathbf{r},t)=\frac{1}{4\pi\varepsilon_0}\int \frac{\rho(\mathbf{r}',t)}{|\mathbf{r}-\mathbf{r}'|}d^3r'.\tag{3}$$ In Coulomb gauge the vector potential ##\mathbf{A}## is given by...
View full post »
Thread 'Does Poisson's equation hold due to vector potential cancellation?'

Thread 'Does Poisson's equation hold due to vector potential cancellation?'

Imagine that two charged particles, with charge ##+q##, start at the origin and then move apart symmetrically on the ##+y## and ##-y## axes due to their electrostatic repulsion. The ##y##-component of the retarded Liénard-Wiechert vector potential at a point along the ##x##-axis due to the two charges is $$ \begin{eqnarray*} A_y&=&\frac{q\,[\dot{y}]_{\mathrm{ret}}}{4\pi\varepsilon_0 c^2[(x^2+y^2)^{1/2}+y\dot{y}/c]_{\mathrm{ret}}}\tag{1}\\...
View full post »

Similar threads

I I'm calculating more energy out than I put in
3
Replies
138
Views
8K
B Vacuum permittivty with alternative Standard-Unit for meters
Replies
3
Views
932
I How is the popular estimate of the Earth's atmospheric mass correct?
Replies
8
Views
2K
I What is the magnetic equivalent to the Coulomb?
Replies
6
Views
1K
B How is 1N enough to move a 0.1kg apple 1 meter high?
Replies
8
Views
2K
B Use Surface-Volume to approximate gravity for planets and protons
Replies
6
Views
584
Conversion factor when converting from SI to natural units
Replies
1
Views
876
I Relative Strength of the Magnus effect relative to gravity
Replies
25
Views
4K
Convert solar radiation from Joule per cm square to Watt per meter^2?
Replies
1
Views
8K
I How Does Non-Stretchy Mat Material Affect Trampoline Performance?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top