How Do You Calculate Forces and Time for a Falling Object?

Click For Summary

Homework Help Overview

The discussion revolves around calculating forces and time for a falling object, specifically an egg dropped from a height of 5.1816 meters with a mass of 0.057 kg under the influence of gravity (9.8 m/s²). Participants are exploring the forces acting on the object, including gravitational force and potential air resistance.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants attempt to calculate the gravitational force using the equation Fg = m*g, with one participant noting the result as 0.5586 N. Questions arise regarding the net force, upward forces, and the time to hit the ground. There is also discussion about the significance of air resistance based on the object's material.

Discussion Status

The discussion is ongoing, with participants sharing their calculations and questioning the role of air resistance. Some guidance is provided regarding the types of forces involved, but no consensus or definitive solutions have been reached yet.

Contextual Notes

Participants are considering the impact of air resistance on the falling object, with varying assumptions about its significance depending on the object's material. There is a mention of the need to account for contact forces in addition to gravitational forces.

playW/Gravity
Messages
2
Reaction score
0

Homework Statement


The height of which it will be dropped 5.1816m, then the mass is 0.057kg. and the gravity is 9.8m/s^2 .What is the force downward? what's the net force and what's the up force? and what's the time to hit the ground?


Homework Equations


Fg=m*g


The Attempt at a Solution


Fg=.057kg*9.8=.5586 N
thats all i know how to do thanks
 
Physics news on Phys.org
playW/Gravity said:

Homework Statement


The height of which it will be dropped 5.1816m, then the mass is 0.057kg. and the gravity is 9.8m/s^2 .What is the force downward? what's the net force and what's the up force? and what's the time to hit the ground?


Homework Equations


Fg=m*g


The Attempt at a Solution


Fg=.057kg*9.8=.5586 N
thats all i know how to do thanks

The only other thing that may be significant is are resistance once the mass starts falling. If the mass is a lead pellet, air resistance won't have much significance. If the pass is a huge block of polystyrene, air resistance will be significant.
The only thing you know for sure is that air resistance on a falling object is directed up.
 
PeterO said:
The only other thing that may be significant is are resistance once the mass starts falling. If the mass is a lead pellet, air resistance won't have much significance. If the pass is a huge block of polystyrene, air resistance will be significant.
The only thing you know for sure is that air resistance on a falling object is directed up.

its an egg , but how do u fund the other forces
 
playW/Gravity said:
its an egg , but how do u fund the other forces

I would have thought gravity and iar resistance is all.

For all situations, remember the following.

Field forces arising from Gravity, electrostatics and magnets act without contact.

All other forces are contact forces - something pushing, or pulling via a thread/string.

For the egg you can likely rule out electrostatics and magnets, so we have gravity plus anything else that is touching the egg.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K
Replies
7
Views
3K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 11 ·
Replies
11
Views
7K
Replies
7
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 31 ·
2
Replies
31
Views
4K