a. Correct
The last sentence in your problem is incomplete.
A dog sled team is pulling a sled across a flat patch of snow. The total force exerted by the four dogs is 475 N (applied horizontally). The sled (with driver on it) weighs 350 kg. and the coefficient of kinetic friction between the sled and the ground is
(a) What is the normal force on the sled (with the driver)? - For this I got 3,430N
Ws = mg = 350kg * 9.8N/kg = 3430 N. = Wt of sled incl. load.
(b) What is the force of friction on the sled (with the driver)?
(c) Determine the acceleration of the sled.
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