wet means lubrication. One of those is not wet. There is no difference in pulling or pushing. Think wet, or dry.
Which of the following would require the greatest force to keep a 5.0 kilogram rubber
block moving horizontally at a constant rate of speed?
a. Pushing the block across wet asphalt.
b. Pulling the block across wet asphalt.
c. Pulling the block across wet concrete.
d. Pushing the block across dry concrete.
i don't knw what's the different of pulling and pushing the block...
and i haf calculated that their force of friction..the rubber on wet asphalt is 26.0N...and the rubber on wet concrete is 28.4N...
what do i have to do next?
To determine which scenario would require the greatest force to keep the rubber block moving horizontally at a constant rate, you need to compare the force of friction in each case.
First, let's understand the difference between pulling and pushing:
- Pulling: In this case, you would apply the force in a direction that pulls the block towards you.
- Pushing: In this case, you would apply the force in a direction that pushes the block away from you.
Now, let's analyze the given scenarios:
a. Pushing the block across wet asphalt: The force of friction acting in the opposite direction of the push would be 26.0N.
b. Pulling the block across wet asphalt: The force of friction acting in the opposite direction of the pull would also be 26.0N.
c. Pulling the block across wet concrete: The force of friction acting in the opposite direction of the pull would be 28.4N.
d. Pushing the block across dry concrete: The force of friction acting in the opposite direction of the push would be less than 28.4N but the exact value is not provided.
Based on the information given, we can conclude that pulling the block across wet concrete would require the greatest force to keep it moving at a constant rate. The force of friction in this scenario is given as 28.4N, which is higher than the other provided values.