The net force is calculated by adding up all the forces acting on an object. In this scenario, the two workers are pulling up on the slab with a force of 225 N each, which gives a total force of 225 N + 225 N = 450 N in the upward direction. The gravitational force acting on the slab is 400 N in the downward direction.
To find the net force, we subtract the gravitational force from the total upward force:
Net force = Total upward force - Gravitational force
Net force = 450 N - 400 N
Net force = 50 N
Since the net force is positive (50 N), it means that the total upward force is greater than the gravitational force pulling the slab downward. Therefore, the slab of concrete will move upward.
So, the correct answer is:
50 N; the slab will move upward
Two construction workers are attempting to pull a slab of concrete off of the ground. Each of the workers are pulling up with a force of 225 N, while the slab of concrete applies a gravitational force of 400 N in the opposite direction, remaining stationary.
If the pulling forces applied to the slab of concrete are assigned a positive value, what is the net force of the scenario, and in which direction will the slab of concrete move?
(1 point)
Responses
50 N; the slab will move upward
50 N; the slab will move upward
-50 N; the slab will remain stationary
-50 N; the slab will remain stationary
-175 N; the slab will remain stationary
-175 N; the slab will remain stationary
175 N; the slab will move upward
175 N; the slab will move upward
1 answer
1 answer