What Speed Does a 790kg Mass Need to Move a 1523kg Mass?

  • Thread starter Thread starter GracieBridger
  • Start date Start date
  • Tags Tags
    Speed
AI Thread Summary
To determine the speed required for a 790kg mass to move a 1523kg mass, the context of the interaction is crucial. If the smaller mass is colliding with the larger one, the type of collision (elastic or inelastic) and the friction involved will significantly affect the outcome. On damp tarmac, the coefficient of friction is lower than 0.8, which impacts the force needed for movement. If the 790kg mass is pulling the 1523kg mass, it must overcome the combined mass for effective motion. Ultimately, the specific speed calculation depends on the desired outcome of the collision or movement scenario.
GracieBridger
Messages
4
Reaction score
0
How would I work out how fast a mass of 790kg would have be traveling to move a mass of 1523kg?

It's been a long time since I've done physics so any help would be great.

Thanks guys!
 
Physics news on Phys.org
We need more information -- is the smaller mass colliding with the larger one? If so, is the collision elastic or inelastic? Or is the smaller mass pulling the larger one? Is there friction involved? Etc..
 
Hey mate the smaller mass is colliding with the larger one. The friction would be semi damp Tarmac which from what I've looked at already is 0.8?
I can't remember anything about technical terms in physics.
Basically I want to know how fast my car(pug 107-790kg) would have to travel to shunt the vehicle infront(vectra- 1524kg) if it was at a complete stand still.

Thanks for replying :)
 
Asked and answered in the general physics forum. Damp tarmac will drop the coefficient of friction down well below 0.8. The answer there was based on an assumption of dry pavement.
 
1, Suppose you have the 1523kg mass attached to the 790kg mass by a (very strong) rope and you start moving, then by the moment the 790kg mass will move the 1523 will also move...you will just need more power because you move a mass of ~1523+790 kg.

2. Suppose you want to crash into that 1523kg mass car with yours... then you just need to hit it... even with a very small velocity, you are going to give the other car some portion of it, depending on your cars' masses ratio ... if you want to give some certain velocity to the 1523kg car, then you just have to ask about it.
 

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
View full post »

Thread 'Newton's first law?'

Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
View full post »
Thread 'Beam on an inclined plane'

Thread 'Beam on an inclined plane'

Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...
View full post »

Similar threads

Clueless and in need of help -- I was the rear car of a 4 car collision
Replies
4
Views
1K
I Question about a Rotating system with mass moving inwards
Replies
19
Views
2K
A Decoupling of a spring mass system
Replies
5
Views
1K
I Angular Momentum problem v2 (mass moving inward or outward)
Replies
5
Views
2K
Must the limits on the propagation speed of waves refer to a media?
2
Replies
55
Views
3K
B Move in Space without mass exchange
Replies
4
Views
1K
Does it take longer to accelerate from high speed to higher
Replies
19
Views
2K
I Does a rotating accelerometer moving linearly measure linear velocity?
Replies
47
Views
4K
I Drag equation - relative flow velocity
Replies
11
Views
3K
Confusion about the derivation of the speed of sound
Replies
8
Views
3K

Hot Threads

Recent Insights

Back
Top