- #1

Brodo17

- 18

- 0

F=ma

f=mewFN

First I found the horizonatal force that the boy is exerting on the sled:

Cos60 X 10 = 5N

Then I thought that since the acceleration is constant that the sum of the forces must be zero. This would mean that the frictional force must be equal to the applied force of 5N

So, I said 5N = mew (5kg X 9.8)

And I found mew to be .102

However apparently the answer is .12

Thanks!