How much work is required for a 30 kg dog to pull a sled 50 meters? Work = force x distance a 150 Joules b 1.7 Joules c 1500 Joules d 0.6 Joules
The work required to pull the sled can be calculated by multiplying the force applied by the distance over which it is applied.
The force required to pull the sled can be calculated using the formula F = m*a, where m is the mass of the dog (30 kg) and a is the acceleration needed to pull the sled. Given that the sled is being pulled on a straight, level surface, the acceleration will be 0 m/s^2. Therefore, the force required to pull the sled is simply the weight of the dog, which is equal to its mass times the acceleration due to gravity (9.8 m/s^2).
F = m*a = 30 kg * 9.8 m/s^2 = 294 N
Now, we can calculate the work required using the formula W = F*d, where the force is 294 N and the distance is 50 meters.
W = F*d = 294 N * 50 m = 14700 Joules
Therefore, the correct answer is a) 14700 Joules.