A rubber block weighing 60. newtons is resting on a horizontal surface of dry asphalt. What is magnitude of the minimum force needed to start the rubber block moving across the dry asphalt?
An 8.0-newton wooden block slides across a horizontal wooden floor at constant velocity. What is the magnitude of the force of kinetic friction between the block and the floor?
MULTI STEP PROBLEM
For the diagram above shows a 4.0-kilogram object accelerating at 10. meters per second2 on a rough horizontal surface.
What is the magnitude of the frictional force Ff acting on the object?
When a 12-newton horizontal force is applied to a box on a horizontal tabletop, the box remains at rest. The force of static friction acting on the box is
between 0 N and 12 N
greater than 12 N
If a 30-Newton force is required to accelerate a 2-kilogram object at 10 meters per second2, over a level floor, then the magnitude of the frictional force acting on the object is