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# MEI M1 tension Watch

1. Hi forum.
I cannot figure out part C and it's driving me mental.
Story i've given before: taught for one hour a week with no textbook. be kind.

where a is the acceleration of the system.
The answer is I can find the numbers 2500 and 1000; the former is the force acting upon truck A alone, the latter is the net force acting upon truck A using the acceleration of the system and newton's second law. What I can't figure out is why i'm supposed to add them together. Is there an easier way to do this?

Thanks
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2. anyone?
3. (Original post by TimmonaPortella)
Is there an easier way to do this?

Thanks
Yes. Just focus on the second truck.

Resistance = 2500N
Acceleration = 0.1m/s/s
Mass=10000kg

Tension = ?

T-R=ma
4. I did this chapter assessment.
5. (Original post by Oh my Ms. Coffey)
I did this chapter assessment.
It's a past paper.
6. (Original post by Get me off the £\?%!^@ computer)
Yes. Just focus on the second truck.

Resistance = 2500N
Acceleration = 0.1m/s/s
Mass=10000kg

Tension = ?

T-R=ma
Where do you get 2500 resistance from though? the 2500 is what would be acting forward, were it not for the tension.
the force that would be acting on the truck is 2500, the force that is acting upon the truck is 1000... i can't figure out why tension isn't 1500. it makes no sense.
7. (Original post by TimmonaPortella)
Where do you get 2500 resistance from though? the 2500 is what would be acting forward, were it not for the tension.

The question said the resistance initially was 500N and then there's the extra 2000N

The resistance resists the force P. That means that it is in the opposite direction to P.

Focusing on the second truck, there are just two forces to consider, resistance and tension.

Hence T-R=ma.
8. (Original post by Get me off the £\?%!^@ computer)
The question said the resistance initially was 500N and then there's the extra 2000N

The resistance resists the force P. That means that it is in the opposite direction to P.

Focusing on the second truck, there are just two forces to consider, resistance and tension.

Hence T-R=ma.
Ah, ok, I was on the other truck
makes sense now, thanks

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