SOLUTION: Grade 11 physics- A boy 42 kg is pulling a sled (m = 11 kg) across the flat ground. The snow makes the friction between the sled and the ground small enough that it is ignorable. T

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Question 1188458: Grade 11 physics- A boy 42 kg is pulling a sled (m = 11 kg) across the flat ground. The snow makes the friction between the sled and the ground small enough that it is ignorable. The boy and sled are accelerating at 1.5 m/s2. Determine the force in the rope between the boy and the sled.
Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

The pulling force (same as the tension of the rope) is the force, which

provides acceleration of the sled at 1.5 m/s^2.


According to the Newton's second law, the value of this force (its magnitude) is


    F = ma = 11 * 1.5 = 16.5 newtons.    ANSWER

Solved.

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The given mass of the boy  (42 kg)  is an excessive info,  irrelevant to the problem.