A father pulls his identical twins on identical sleds tied one after the other.

Question

A father pulls his identical twins on identical sleds tied one after the other. He exerts a force of 100 N that makes an angle of 30 degrees with the horizontal and that leads to an acceleration of the two sleds. The mass of each sled with its twin is 50 kg. Assume no friction. What is the tension of the rope that he is pulling? What is the tension of the rope between the two sleds?

Explanation / Answer

for the first sled ma=Fcos30-T for the second sled; ma= T --> ma+ma=Fcos30-->a=Fcos30/2m --> T=Fcos30/2 (this is the tension between two sleds) the tension in rope that father is pulling is = F

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