- #1
Block Slides Down Giant Globe in Italy
- Thread starter soupastupid
- Start date
-
- Tags
- Block
Click For Summary
Homework Help Overview
The discussion revolves around a block sliding down a large globe in Italy, focusing on the forces acting on the block and the implications of gravity in this scenario.
Discussion Character
- Exploratory, Assumption checking, Conceptual clarification
Approaches and Questions Raised
- Participants explore the nature of gravity acting on the globe, questioning whether the globe has its own gravitational force. There is a discussion about the forces acting on the block once it leaves the globe, including considerations of friction and the role of Earth's gravity. The implications of centripetal acceleration and normal force are also examined.
Discussion Status
Participants are actively engaging with the problem, raising questions about the forces involved and the conditions of motion. Some guidance has been provided regarding the role of Earth's gravity, but multiple interpretations of the forces and conditions are still being explored.
Contextual Notes
There is an ongoing discussion about the assumptions related to the forces acting on the block, particularly regarding friction and the normal force as the block transitions from the globe to free fall.
- #2
- 12,179
- 186
No, the globe doesn't have any significant gravity of it's own. Just use the Earth's gravity.
- #3
soupastupid
- 34
- 0
and so it is a and c
becuz
once the block leaves the globe
nothing is pushing the box up (but friction) and nothing is slowing the box down in the horizontal direction (but friction)
and so the only force is the earth?
right?
becuz
once the block leaves the globe
nothing is pushing the box up (but friction) and nothing is slowing the box down in the horizontal direction (but friction)
and so the only force is the earth?
right?
- #4
- 12,179
- 186
Yes, the only force is the Earth's gravity. (So no friction.)
- #5
soupastupid
- 34
- 0
ok the next questions asks about about momentum
im thinking
centripetal acceleration cannot be zero becuz
is it zero? i don't think so becuz its traveling on a circular path prior to leaving the globe
normal force must be zero becuz nothing is pushing up
the net acceleration is down and its velocity is going right and down
the kinetic energy cannot equal its potential energy becuz you cannot tell if the box is halfway down the globe right?
so the only choice is normal force right?
B
im thinking
centripetal acceleration cannot be zero becuz
is it zero? i don't think so becuz its traveling on a circular path prior to leaving the globe
normal force must be zero becuz nothing is pushing up
the net acceleration is down and its velocity is going right and down
the kinetic energy cannot equal its potential energy becuz you cannot tell if the box is halfway down the globe right?
so the only choice is normal force right?
B
Attachments
Similar threads
- · Replies 4 ·
- · Replies 20 ·
- · Replies 7 ·
- · Replies 12 ·
- · Replies 1 ·
- · Replies 4 ·
- · Replies 6 ·