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    Force of Friction Equation?

    I think the reason that my problems have arisen is because of my equation for the force of friction. I have Ff= ucosAngle That right?
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    Force of Object on Inclined Place

    I need extra help. I'm studying for my Final Exam which is tomorrow and I cannot remember how to find forces of objects on an inclined plane. The question I'm having troubles with is: A 12.5 kg crate is placed on a ramp that is at an angle of 22 degrees from the horizontal. Find the...
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    Final Exam Question Help

    Final Exam Question Help!!! HELP!! I need extra help. I'm studying for my Final Exam which is tomorrow and I cannot remember how to find forces of objects on an inclined plane. The question I'm having troubles with is: A 12.5 kg crate is placed on a ramp that is at an angle of 22 degrees...
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    Mechanics of a spring

    There is a question involving a simple land rover that can be controlled to go a certain distance. It is two pop bottles connected spout to spout and attached around the middle is a metal tape measure which one would roll up and then let go for the rover to move. I have to explain the mechanics...
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    Heat resistant and truly frictionless substance

    QUESTION If it were possible to make a tough, heat resistant and truly frictionless substance, what applications would it have? [?]
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    I really need Help SERIOUSLY

    Ok....the puzzler. I haven't gotten really far. But this is what I have.... Vertical: Delta X= -12.96 m Vo= 0m/s a= -9.80 m/s-squared- v-squared- = vo-squared- + 2aDelta x v= 15.94 m/s v = vo + at t= 1.626 s Horizontal: Delta x= 7.5 m t= 1.626 s v= ? Delta x = vxt vx=...
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    Physics Puzzler!

    HELP!!!!! I am in grade 12 physics and my teacher gave us a puzzler for the weekend. I need serious help with it and all of my classmates cant figure it out either! The question is : A 10.8 kg box is 5.0 m from the edge of a 12.96 m high cliff. Bob pushes the box over the edge of the cliff by...
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    Puzzler Answer

    We were given the answer to this puzzler and its 71.96875 N
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    HELP Projectile motion and Force puzzler

    HELP!! Projectile motion and Force puzzler!! A 10.8 kg box is 5.0 m from the edge of a 12.96 m high cliff. Bob pushes the box over the edge of the cliff by applying a constant horizontal force to it until the box goes over the edge. The force of friction on the box is 49.0 N and the box lands...
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    Physics puzzler! Need serious help

    Physics puzzler! Need serious help!! HELP!!!!! I am in grade 12 physics and my teacher gave us a puzzler for the weekend. I need serious help with it and all of my classmates cant figure it out either! The question is : A 10.8 kg box is 5.0 m from the edge of a 12.96 m high cliff. Bob pushes...
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