Question

In: Mechanical Engineering

A block sits on a flat horizontal surface. The block's mass is 100kg. The coefficient of...

A block sits on a flat horizontal surface. The block's mass is 100kg. The coefficient of static friction is 0.3. The coefficient of kinetic friction is 0.25.

Find whatis the friction cone angle between the two surfaces in degree?

Solutions

Expert Solution

If answer is not matching, then just substitute the value of coefficient of friction in the equation instead of coefficent of static friction, and solve for friction angle.


Related Solutions

A 4.00 kg block sits at rest on a rough horizontal surface. The coefficient of kinetic...
A 4.00 kg block sits at rest on a rough horizontal surface. The coefficient of kinetic friction between the block and the surface is 0.275. Attached to the right side of the block is a spring which is also attached to a wall farther to the right. The spring has a spring constant of 220 N/m and is initially neither compressed nor stretched. A bullet of mass 50.0 grams is fired at the block from the left side. The bullet...
A box of mass 18.0 kg sits at rest on a horizontal surface. The coefficient of...
A box of mass 18.0 kg sits at rest on a horizontal surface. The coefficient of kinetic friction between the surface and the box is 0.300. The box is initially at rest, and then a constant force of magnitude FF and direction 39.0 ∘∘ below the horizontal is applied to the box; the box slides along the surface. A. What is F if the box has a speed of 6.00 m/s after traveling a distance of 8.00 mm? Express your...
Example #2A block with mass m = 5 kg sits on a surface with a coefficient...
Example #2A block with mass m = 5 kg sits on a surface with a coefficient of static friction sk= 0.5 and a coefficient of kinetic friction uk= 0.3. a)If you can pull on the block at any angle, what minimum force is required to break static friction and cause the block to slide? b)What is the optimal angle to pull at? c)If you pull at the optimal angle with the minimum force, what will the acceleration of the block...
1. A block of mass m is sliding on a horizontal surface. The kinetic coefficient of...
1. A block of mass m is sliding on a horizontal surface. The kinetic coefficient of friction between the block and the surface is µk. The drag force is linear with speed (FD = −ℓv, where ℓ is a constant). The initial velocity of the block is v0. (e) Find x(t) (f) Graph v(t) (g) Graph x(t) (h) Describe your solution in words.
A block of mass 4m moves on a flat horizontal surface at speed v, and strikes...
A block of mass 4m moves on a flat horizontal surface at speed v, and strikes another block of mass m, that is attached via a horizontal spring to another block of mass 2m. The two masses are stationary.  The spring constant is k. All collisions are completely inelastic and there is no friction anywhere. What is the velocity of the center of mass when the spring is ¼ the way to max compression.
A block of mass m = 98 kg slides along a horizontal surface. The coefficient of...
A block of mass m = 98 kg slides along a horizontal surface. The coefficient of friction between the block and the surface is μk = 0.38. The block has an initial speed of vo = 13 m/s in the positive x-direction as shown. a) write an expression for x-component of the frictional force the block experiences, F(f), in terms of the given variables and variables available in the palette b) what is the magnitude of the frictional force in...
A block of mass m1=4.00 kg moves on the surface of a horizontal table. The coefficient...
A block of mass m1=4.00 kg moves on the surface of a horizontal table. The coefficient of kinetic friction between the table top and m1 is equal to 0.350. Block 2 of mass m2=2.00 kg is tied to m1 via a string that passes over a frictionless, massless pulley. The two blocks start from rest and m2drops by a distance L=1.75 m to the floor. Calculate the net work Wnet done by all the forces acting on the system
A block of mass 5kg is sits on a flat smooth lab bench. It is attached...
A block of mass 5kg is sits on a flat smooth lab bench. It is attached by two cords which are placed over pulley’s to hanging masses m1=8kg and m2=12kg on either side. Determine the acceleration of the system and the tension in each cord (they are different).
Problem A big box of mass m1 sits on the flat surface. There is no friction...
Problem A big box of mass m1 sits on the flat surface. There is no friction between this box and the surface. A small box with mass m2 sits on top of the big one. There is friction between two boxes and the friction coefficient is µ. A force F is applied to the big box in the horizontal direction to the right. What is the maximum value of F that can be applied so that the upper box does...
A 100kg mass traveling with a velocity of 15m/s on a horizontal surface strikes a spring...
A 100kg mass traveling with a velocity of 15m/s on a horizontal surface strikes a spring with a spring constant k = 5 N/m a. Find the compression of the spring required to stop the mass if the surface is frictionless b. Find the compression of the spring if the surface is rough (0.4ku=0)
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT