PDA

View Full Version : i need help with a formula


badboyben03
Dec11-03, 05:30 PM
what formula do i need to solve this problem?

A sled of mass 57 kg is pulled along snow-covered, flat ground. The static friction coefficient is 0.30, and the sliding friction coefficient is 0.10.

What does the sled weigh?

chroot
Dec11-03, 05:34 PM
Force = mass * acceleration

Weight = mass * g

- Warren

badboyben03
Dec11-03, 05:37 PM
how do i find the coefficient of frcition?

chroot
Dec11-03, 05:44 PM
You don't need to find it. It's given. It's also irrelevant to the problem. The problem just asked you for weight -- all you need is mass and the acceleration due to gravity (9.8 m/s^2).

- Warren

badboyben03
Dec11-03, 05:46 PM
oh, im sorry. maybe i should've been more specific. If I was just givin the force, the mass and acceleration. I'm not given the coefficient of friciton or the frictional force.

chroot
Dec11-03, 05:48 PM
I have no idea what you're asking. Are you talking about some new problem now?

- Warren

badboyben03
Dec11-03, 06:10 PM
yeah