# Tag Info

### Why can’t we accelerate a rotating object after some point?

This gets back to the original answer by Tigerguy. You have the maximum torque your legs can put out. You also have the maximum power your legs can put out (power = torque x rotational speed). But you ...
• 109

### Effect of Earth's rotation on moving vehicles

The answer to the effects of Earth's rotation of moving vehicles: First, Earth doesn't rotate at a rate of 460 m/s. In fact, m/s is not the unit for the angular speed. It's like using Liters for mass. ...
• 146

### How does 2nd gear create more thrust than 1st gear?

I think that you've totally missed the limiting factor - maximum engine speed. The 1st gear has a maximum velocity value after which you can’t accelerate more. No, it's the engine RPM is limited. ...
• 10.6k

### Why can’t we accelerate a rotating object after some point?

This would work if input power could handle infinite speeds. On a bicycle, your legs limit how fast you can pedal and the power you can input to the system. Motors have speed limits as well. The ...
• 6,803

### Changing the relative equilibrium position for a 2-mass spring-mass system

At equilibrium $\ddot{r}_2=0,\ \dot{r}_2=0$. So, from the second equation, $$r_2-r_1 = \frac{m_2 g \cos\theta}{K_{12}}$$ For positive values of $m, g, \cos\theta, K_{12}$, $r_2 > r_1$. i.e. mass #2 ...
• 1,039