i need to find the speed of an object when it reaches the end of a slope, and im only given the degree of the slope and the friction the object produces.
how do i get said speed?
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Anonymous2009-03-01 23:12
you're lucky I'm bored and in a helpful mood. draw a free-body diagram. use it to figure out the acceleration of the object. use F=ma. you aren't given mass but you won't need it. you should be able to form equations with mass on both sides and cancel it out. use the kinematics equations to find velocity using acceleration and distance.
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Anonymous2009-03-01 23:31
If its a simple linear slope, you could use a Kinetic Energy, Gravitational Potential, and Friction Energy loss equation.
1/2 mv^2 = m*g*h - coefficient*cos60*m*g*distance traveled, solve for v. The distance stipulation is what makes any sort of curvature a little more difficult.
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Anonymous2009-03-02 6:05
thanks a lot anonymous, your help is very apreciated