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# How do you calculate the force needed to pull a mass of 20gk at a uniform slow speed up a plane inclined at an angle of 30 with the horizontal if the coefficient of kinetic friction is 0.20?

Updated: 9/22/2023

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Q: How do you calculate the force needed to pull a mass of 20gk at a uniform slow speed up a plane inclined at an angle of 30 with the horizontal if the coefficient of kinetic friction is 0.20?
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### Determining coefficient of static friction using an inclined surface?

co -efficient of friction is equal to tan inverse of the inclination

### There are two inclined planes ab and bc making a triangle of angles 45-90-45 90 degree is at b which has a pulley the string over it connects two masses m on ab and 2m on bc the friction coefficie?

(Coefficient of friction of plane ab) + 2(Coefficient of friction of plane bc) = 1 Coefficient of friction of plane ab = Coefficient of friction of plane bc = 1/3 = 0.33333......

### How can you measure rolling resistance?

Roll the object down an inclined plane. Adjust the angle so that the objects rolls down without sliding at a constant speed. When that happens, the tangent of the angle of the plane relative to the horizontal is the coefficient of rolling friction.

### Can an object move backward on an inclined plane?

Yes, if the incline angle becomes great enough. &gt; As the angle increases, the force on the object down the incline increases but the effective weight on the slope surface decreases. &gt; When the object breaks away the angle of incline can be used to calculate the coefficient of friction between the two surfaces. &gt; coefficient of friction = sine ( incline angle ) / cosine ( incline angle )

### How can an adjustable inclined plane be used to measure the coefficient of static friction and coefficient of static friction with a mass of 5.0?

Incline the plane until breakaway is achieved and note the angle. &gt; A) Sin angle * 5 = force down (and parallel to) the slope in kgf. &gt; B) Cos angle * 5 = force (weight) of block normal to slope surface. &gt; Static friction coefficient = A / B

### A block accelerates at 3.2 down a plane inclined at an angle 30 degrees. Acceleration of gravity is 9.8. Whats the coefficient of static friction between the block and the inclined plane?

Static friction does not apply when the block is already moving. Without friction, the force on the block parallel to the surface of the incline is Fg*sin(angle), so the acceleration without friction is 9.8* sin(30) = 9.8 * (1/2) = 4.9 Since it is accelerating at 3.2, friction is slowing down the block by (4.9-3.2 = 1.7). The coefficient of kinetic friction is (1.7/4.9) = 0.346939

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### How can an adjustable inclined plane be used to measure the coefficient of static friction and coefficient of kinetic friction?

Place the object on the plane. Slowly increase the angle of the plane until the object begins to move at angle &Theta;. The &micro;s = tan &Theta;. For &micro;k, same process, but give the object a little push at each increasing value of &Theta;.

### Is any flat surface an inclined plane?

No. A flat surface which is horizontal is not an inclined plane.

### A 3.6kg object slides down a a 2 meters long slide inclined at 60 degrees to the horizontal A friction force of 3Newtons acts along the way and gravity is 9.8 calculate potential energy lost?

The easy answer to this question is to recognize that some of the potential energy will be lost to work against friction and this loss is simply the force of friction multiplied by the length of the ramp which is 6N. The previous answers I submitted are incorrect.

### A plane inclined at an angle 35 degrees from horizontal if the coefficient of static friction between the crate and the plane is 0.65 will the crate slide down the plane?

Is mgsin&Theta; &gt; &mu;mgcos&Theta; ? Is sin&Theta; &gt; &mu; cos&Theta; ? Is sin35&ordm; &gt; .65 cos35&ordm; Is .573 &gt; .532 =&gt; Yes, so crate slides down the plane, no matter what the mass is or acceleration due to gravity