# Calculating force with only mass and distance known

1. Jul 22, 2010

### GMCOWNER

Say I have a block with a known mass and surface area. If I apply an unknown force to the block and it travels a known distance how can I calculate the applied force. It seems simple if I had a known acceleration but I do not.

2. Jul 22, 2010

### AJ Bentley

You simply do not have enough information.

3. Jul 22, 2010

### GMCOWNER

What other information would i need?

4. Jul 22, 2010

### seto6

As AJ said not enough information is given. is this a example, if so can you type it up, or up load it?

5. Jul 22, 2010

### GMCOWNER

Basically i have a block that is set on a peg 3.5" off of the ground. We apply a unknown pressure to it and see how far it travels. I need to find out what the force applied to the block is. How can i calculate this. If i do not have enough info what other info do i need?

6. Jul 22, 2010

### AJ Bentley

It still isn't clear what you mean.

'Set on a peg' could mean any one of a number of scenarios.

How are you applying pressure? Do you know what exactly the word pressure actually means in physics? Or do you mean a force?

'See how far it travels' - In which direction, up? down? sideways?

You will need to explain in careful detail exactly what your experiment looks like if we are to help you. A proper drawing would be helpful (Not some hasty scribble - do it carefully).