Question

The coefficient of friction is now only 0.12. if a person weighing 650.0 n sits on the sled, what force is needed to pull the sled across th snow at constant speed?

A) 650.0 N
B) 78.0 N
C) 546.0 N
D) 72.0 N

Answer 1

The force needed to pull the sled across the snow at a constant speed is 78.0 N

Step-by-step explanation:

To find the force needed to pull the sled across the snow at a constant speed, we can use the equation:

F = μN

where F is the force of friction, μ is the coefficient of friction, and N is the normal force. In this case, the normal force is equal to the weight of the person sitting on the sled, which is 650.0 N. The coefficient of friction is given as 0.12. Therefore, the force needed to pull the sled across the snow at a constant speed is:

F = 0.12 * 650.0 N = 78.0 N