Force on one mass from another mass

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Homework Help Overview

The discussion revolves around determining the force acting on a 30kg cart due to a 50kg cart when a force of 120N is applied to the 30kg cart. The participants are exploring concepts related to Newton's laws of motion, specifically focusing on the net force and acceleration of the system of carts.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss finding acceleration as a first step and consider whether to combine the masses of the carts since they are in contact. There is also a suggestion to analyze the forces acting on one of the carts.

Discussion Status

The discussion is ongoing, with participants sharing their thoughts on how to approach the problem. Some have provided calculations for acceleration, while others encourage deeper analysis of the forces involved. There is no explicit consensus yet, but the dialogue is productive.

Contextual Notes

Participants are working under the assumption that the carts are initially in contact and that friction can be ignored. There is also a mention of the problem being part of a larger question.

Drake M
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Homework Statement


Determine the force acting on a 30kg cart by a 50kg cart if the 30kg cart is pushed into the 50kg cart with a force of 120N.
m1=30kg
m2=50kg
Fa=120N

Homework Equations


FNET=ma
FNET=sigmaF

The Attempt at a Solution


Im really confused on where to start here. I was thinking of finding acceleration then substituting in for an FNET equation to find F of 2on1. Any tips on where to start would be helpful thanks.
 
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Drake M said:

Homework Statement


Determine the force acting on a 30kg cart by a 50kg cart if the 30kg cart is pushed into the 50kg cart with a force of 120N.
m1=30kg
m2=50kg
Fa=120N

Homework Equations


FNET=ma
FNET=sigmaF

The Attempt at a Solution


Im really confused on where to start here. I was thinking of finding acceleration then substituting in for an FNET equation to find F of 2on1. Any tips on where to start would be helpful thanks.
Is this the exact question, or have you paraphrased it?
I'm guessing we are to take the carts as initially in contact already, we are to ignore friction, and the 120N is a force applied to the 50kg cart.
If so, yes, consider acceleration. What will the acceleration be?
 
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Yes i have paraphrased it because it was c) of a question. To find acceleration would I combine the masses of the carts since theyre in contact? If I did then it would be
FNET=sigmaF
FNET=120N
FNET=ma
a=m/FNET
=80kg/120
.666m/s/s.
 
Drake M said:
FNET=ma
a=m/FNET
Try that again.
 
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Whoops...a would equal 1.5m/s/s.
So now that I have acceleration. would I just multiply it by the mass of the 50kg cart?
 
Drake M said:
Whoops...a would equal 1.5m/s/s.
So now that I have acceleration. would I just multiply it by the mass of the 50kg cart?
Maybe, but instead of just asking me, how about you try your own analysis? Pick one of the two carts and consider all the forces acting on it.
 
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Yeah Ill try to look further into it
 

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