You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 273 N for 7.2 s, during which time the refrigerator moves a distance of 3.4 m at constant velocity.
Question????
To solve this problem, we can use Newton's second law of motion, which states that the net force applied to an object is equal to the product of its mass and acceleration. In this case, since the refrigerator is moving at a constant velocity, its acceleration is zero. Therefore, the net force acting on the refrigerator must also be zero.
The net force can be calculated using the formula:
Net force = Applied force - Frictional force
In this scenario, we want to find the frictional force acting on the refrigerator. The applied force is given as 273 N. Since the net force is zero, we can rewrite the formula as:
Frictional force = Applied force
Now we can calculate the frictional force using the given information.
Frictional force = 273 N
Therefore, the frictional force acting on the refrigerator is 273 N.