Consider a box that is placed on different surfaces.
a) In which situation (s) is there no force acting on the box?
b) In which situation (s) is there a static friction force acting on the box?
c) In which situation (s) is there a kinetic friction force acting on the box?
Various possible situations are as under:
I. The box is at rest on a rough horizontal surface.
II. The box is at rest on a rough tilted surface.
III. The box is on the rough-surfaced flatbed of a truck- the truck is moving at a
constant velocity on a straight, level road and the box remains in the same
place in the middle of the truck bed.
IV. The box is on the rough-surfaced flatbed of a truck- the truck is speeding up
on a straight, level road, and the box remains in the same place in the middle of
the truck bed.
V. The box is on the rough-surfaced flatbed of a truck- the truck is climbing a
hill and the box is sliding towards the back of the truck.
Consider a box that is placed on different surfaces.
a) In which situation (s) is there no force acting on the box?
b) In which situation (s) is there a static friction force acting on the box?
c) In which situation (s) is there a kinetic friction force acting on the box?
Various possible situations are as under:
I. The box is at rest on a rough horizontal surface.
II. The box is at rest on a rough tilted surface.
III. The box is on the rough-surfaced flatbed of a truck- the truck is moving at a
constant velocity on a straight, level road and the box remains in the same
place in the middle of the truck bed.
IV. The box is on the rough-surfaced flatbed of a truck- the truck is speeding up
on a straight, level road, and the box remains in the same place in the middle of
the truck bed.
V. The box is on the rough-surfaced flatbed of a truck- the truck is climbing a
hill and the box is sliding towards the back of the truck.
