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Frictional-Forces
Frictional-Forces Questions
A box with a mass of #4 kg # and initial speed of #3 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #2 # and an incline of #pi /12 #. How far along the ramp will the box go?
A box with an initial speed of #3 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #8/7 # and an incline of #( pi )/4 #. How far along the ramp will the box go?
A box with an initial speed of #3 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #2/5 # and an incline of #( pi )/8 #. How far along the ramp will the box go?
An object, previously at rest, slides #5 m# down a ramp, with an incline of #pi/6 #, and then slides horizontally on the floor for another #1 m#. If the ramp and floor are made of the same material, what is the material's kinetic friction coefficient?
An object with a mass of #4 kg# is lying still on a surface and is compressing a horizontal spring by #1/4 m#. If the spring's constant is #3 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?
An object with a mass of # 5 kg# is lying on a surface and is compressing a horizontal spring by #20 cm#. If the spring's constant is # 9 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?
A truck pulls boxes up an incline plane. The truck can exert a maximum force of #4,000 N#. If the plane's incline is #(5 pi )/8 # and the coefficient of friction is #9/8 #, what is the maximum mass that can be pulled up at one time?
How does friction affect the net force?
A box with an initial speed of #1 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #3/4 # and an incline of #pi /8 #. How far along the ramp will the box go?
If a #4 kg# object moving at #2/3 m/s# slows to a halt after moving #6 m#, what is the coefficient of kinetic friction of the surface that the object was moving over?
An object with a mass of #7 kg# is on a ramp at an incline of #pi/12 #. If the object is being pushed up the ramp with a force of # 6 N#, what is the minimum coefficient of static friction needed for the object to remain put?
An object with a mass of #6 kg# is pushed along a linear path with a kinetic friction coefficient of #u_k(x)= 1+3cscx #. How much work would it take to move the object over #x in [(pi)/6, (pi)/4], where x is in meters?
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