Recent content by Revolt

Have uploaded a new file with my method, anyone comment please?

Could someone maybe run through this and tell me if they get a matching 314kg for the other block? thanks

For some reason the scanner isn't working, but basically i found the force required to in effect keep the block on the slope still, using F = mgsin20 + umgcos20 and from this force i used m=F/g to get the mass of the block, 314kg... this seem right ?

Indeed, got another solution ill upload in a minute

A 300kg block is sitting on a slope of 20 degrees, the coeff of friction is 0.75, if the block is connected to a mass hanging vertically via a pulley, what is the mass of the hanging block such that it will overcome friction but not move the block F = mgsin20 for the force acting down the...

dQ/dt = -kA dT/dx if a is the cross sectional area of the sole of the shoe do you then not need the thickness of it ? ;s and dT/dx would be the rate of change of temperature, however I am unsure as to what the rate of change is as all your told is it changes from 37 to 0 ive hit a brick...

Homework Statement a person with a body temp of 37 degrees stands on snow with a temp of 0 degrees each of there shoes has a sole 1cm thick with an area of 300cm^2 and a 0.2 thermal conductivity what is the magnitude and direction of heat flow Homework Equations The Attempt at...