Answer:
T=1560N
Step-by-step explanation:
The train and the car
Since friction is negligible
Then the force acting on the car will be normal force and weight
No forward force act on the car,
It is only the tension cause by the trailer act on the car.
Then using summation of force= ma
ΣF = ma
The only force acting on the car is the tension rope use to tie the car and the trailer together and that is the force exerted by the car on the trailer
Then,
That tension is =ma
T=1200×1.3
T=1560N.
Then the tension on the trailer is 1560N