- #1

- 3

- 0

on static or kinetic friction? i am just confused with this whole thing! what is the point of this expiremnent?

- Thread starter musi
- Start date

- #1

- 3

- 0

on static or kinetic friction? i am just confused with this whole thing! what is the point of this expiremnent?

- #2

LowlyPion

Homework Helper

- 3,090

- 4

Welcome to PF.would my aim be to determine whether weight will have an effect on static or kinetic friction?

The answer is yes.

The aim is to determine the force needed to move different weights.

The ratio of the force required divided by the weight is your coefficient of friction. That's what they want you to determine.

- #3

- 2,017

- 85

If you only pulled 1 block, then the aim is to get you to see that the coefficients are different. If you pulled multiple blocks then the aim was to determine the effect of weight.

- #4

tiny-tim

Science Advisor

Homework Helper

- 25,832

- 251

Hi musi! Welcome to PF!we pulled an object using a spring balance {horizontally} what where we measuring with the spring balace? where does mass and weight come in? would my aim be to determine whether weight will have an effect

on static or kinetic friction? i am just confused with this whole thing! what is the point of this expiremnent?

Was this mass pulled at a steady speed (when it was moving)?

If so, then, both when it was stationary and when it was moving, the only horizontal forces on it were the pulling force and the friction force.

By good ol' Newton's second law, they have to be equal, and by his third law the pulling force has to equal the force on the spring (as shown on the spring's scale)

Though I don't understand where the difference between mass and weight came into the experiment … unless you could alter the ratio of mass to weight (say, by going to a mountain-top, or by attaching helium balloons to the mass).

- #5

- 3

- 0

Oh okay. thank you i get it now.

- Replies
- 7

- Views
- 2K

- Last Post

- Replies
- 2

- Views
- 3K

- Last Post

- Replies
- 1

- Views
- 6K

- Last Post

- Replies
- 6

- Views
- 3K

- Last Post

- Replies
- 1

- Views
- 3K

- Replies
- 5

- Views
- 980

- Last Post

- Replies
- 9

- Views
- 2K

- Last Post

- Replies
- 2

- Views
- 4K

- Replies
- 3

- Views
- 4K

- Last Post

- Replies
- 3

- Views
- 3K