A block lies on a plane raised an angle from the horizontal. Three forces act upon the block: , the force of gravity; , the normal force; and , the force of friction. The coefficient of friction is large enough to prevent the block from sliding .

OneClass: A block lies on a plane raised an angle from the horizontal. Three forces act upon the bloc...

A block is resting on a wooden plank. There is a hinge on one end of the plank which allows the other end to be lifted to create an angle, , with respect to the horizontal as shown in the figure. The coefficient of static friction between the block and the plank is

Part (a) Please select the correct Free Body Diagram, where Fg, is the force due to gravity, N is the normal force, and Fr, is the static friction force.

Part (b) The angle A is slowly increased. Write an expression for the angle at which the block begins to move in terms of .

Part (c) If a student measures that the block begins to move at an angle of = 22°, what is the numerical value of the coefficient of static friction, ?

indigohound210

A block of mass m rests against a spring with a spring constant of k on a rough inclined plane which makes an angle of θ degrees with the horizontal. The block compresses the spring a distance d from its neutral position, and friction is preventing the block from moving up the ramp. Use Fsp as the spring force, Fs for the force of static friction, and Fk as the force of kinetic friction. Set your coordinates to have the x-axis along the surface of the plane, with up the plane as positive, and the y-axis normal to the plane, without as positive. Denoting the coefficient of static friction by us, Write an expression for the sum of the forces in the x-direction just before the block begins to slide up the inclined plane. Use defined quantities and g in your expression.

limefox489

A block of mass m rests against a spring with a spring constant of k on a rough inclined plane which makes an angle of θ degrees with the horizontal. The block compresses the spring a distance d from its neutral position, and friction is preventing the block from moving up the ramp. Use Fsp as the spring force, Fs for the force of static friction, and Fk as the force of kinetic friction. Set your coordinates to have the x-axis along the surface of the plane, with up the plane as positive, and the y-axis normal to the plane, without as positive. Denoting the coefficient of static friction by us, Write an expression for the sum of the forces in the x-direction just before the block begins to slide up the inclined plane. Use defined quantities and g in your expression.

peachcricket150

A block lies on a plane raised an angle from the horizontal. Three forces act upon the block: , the force of gravity; , the normal force; and , the force of friction. The coefficient of friction is large enough to prevent the block from sliding .

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