1. An object has a mass of 20.0 kg and a coefficient of friction of 0.40....
1. An object has a mass of 20.0 kg and a coefficient of friction of 0.40. Find the force of friction in this situation.
2. An object is known to have a coefficient of kinetic friction (µk) of 0.167 and a coefficient of static friction (µs)
of 0.42. If the normal force is 200.0 N, how much frictional force will it encounter while it is moving?
3. An 80.0 kg object has a µk = 0.35 and a µs = 0.60. How much force is required to get the object to start to move
from rest?
Homework Answers
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1. An object has a mass of 20.0 kg and a coefficient of friction
of 0.40....
5) An object is moving to the left at constant velocity. A constant force to the left is now applied to the object...
5) An object is moving to the left at constant velocity. A constant force to the left is now applied to the object. Which of the following is correct? A) The object continues to move to the left, and its speed increases. B) The object continues to move to the left with a constant speed. C) The object continues to move to the left, and its speed decreases. D) The object immediately stops and then begins moving to the right...
A block of mass m = 2.0 kg is sitting stationary on a table. A horizontal...
A block of mass m = 2.0 kg is sitting stationary on a table. A horizontal force of magnitude F = 5.0 N is applied to the block, as shown. The coefficient of static friction is µS = 0.7, and the coefficient of kinetic friction is µK = 0.5. To the nearest 0.1 N, what is the magnitude of the force of friction between the block and the table?
A mass of 9 kg rests on a floor with a coefficient of static friction of...
A mass of 9 kg rests on a floor with a coefficient of static friction of 1.25 and coefficient of kinetic friction of kinetic friction of 0.1. One force is applied vertically downward of 10 Newtons and another force is applied at an angle of 15 degrees below the horizontal. Calculate what the magnitude this force needs to be in order to begin to move the mass. If the same amount of force is applied at the same angle above...
Consider a 3.0 kg mass on a spring on a horizontal surface. The spring has spring...
Consider a 3.0 kg mass on a spring on a horizontal surface. The
spring has spring constant 45 N/m. The static coefficient of
friction between the mass and the surface is µS = 0.30 and the
kinetic coefficient of friction is µK = 0.20
(a) When the mass is at x0 = 20 cm it is moving to the right
with speed 50 cm/s. Where does it first come to a stop? [Hint: use
energy considerations.]
(b) Once the mass...
In the figure that shows the coefficient of static friction between the mass mA and the...
2. In Figure the coefficient of static friction between mass mA and the table is 0.40, whereas the coefficient of kinetic friction is 0.30 (a) What minimum value of mA will keep the system from starting to move? (b) What value(s) of mA will keep the system moving at constant speed?
In the figure that shows the coefficient of static friction between the mass mA and the...
In
the figure that shows the coefficient of static friction between
the mass mA and the table is 0.40 while the coefficient of kinetic
friction is 0.30. Determine the minimum value of mA that would
maintain the system without moving
mA ntp 2.0 kg
In the experiment to measure the coefficient of kinetic friction by sliding a block down on...
In the experiment to measure the coefficient of kinetic friction by sliding a block down on inclined plane, it is required that the block move at constant velocity. Why is this requirement necessary? 5. Frictional forces on a block on an inclined plane are directed down the plane (TRUE/FALSE). 9. How does the coefficient of kinetic friction depend on the constant speed of a moving object?
- A 3.1-kg flower pot sits on the ground. The coefficient of static friction between the...
- A 3.1-kg flower pot sits on the ground. The coefficient of static friction between the flower pot and the ground is 0.54. Maria pushes the flower pot with a force of 5.2 Newtons, but it does not move. How strong is the static friction? -A 1.6-kg book sits on a table. The coefficient of static friction between the book and the table is 0.39. What is the hardest you can push on the book without it moving?
Why is the friction equal to the force? A crate of mass 180 kg sits on...
Why is the friction equal to the force?
A crate of mass 180 kg sits on a horizontal floor. The coefficient of static friction between the crate and the floor is 0.4, and the coefficient of kinetic friction is 0.36. You push the crate with a horizontal force of 600 N. What is the magnitude of the frictional force on the crate by the floor in this situation? [Use g = 9.81 m/s2] Incorrect 635.69 N. Incorrect 706.32 N Incorrect...
A 7.00-kg mass is placed on a 28.0° incline and friction keeps it from sliding. The...
A 7.00-kg mass is placed on a 28.0° incline and friction keeps it from sliding. The coefficient of static friction in this case is 0.574, and the coefficient of sliding friction is 0.528. What is the frictional force in this situation? Group of answer choices
5) An object is moving to the left at constant velocity. A constant force to the left is now applied to the object. Which of the following is correct? A) The object continues to move to the left, and its speed increases. B) The object continues to move to the left with a constant speed. C) The object continues to move to the left, and its speed decreases. D) The object immediately stops and then begins moving to the right...
Consider a 3.0 kg mass on a spring on a horizontal surface. The
spring has spring constant 45 N/m. The static coefficient of
friction between the mass and the surface is µS = 0.30 and the
kinetic coefficient of friction is µK = 0.20
(a) When the mass is at x0 = 20 cm it is moving to the right
with speed 50 cm/s. Where does it first come to a stop? [Hint: use
energy considerations.]
(b) Once the mass...
In
the figure that shows the coefficient of static friction between
the mass mA and the table is 0.40 while the coefficient of kinetic
friction is 0.30. Determine the minimum value of mA that would
maintain the system without moving
mA ntp 2.0 kg
In the experiment to measure the coefficient of kinetic friction by sliding a block down on inclined plane, it is required that the block move at constant velocity. Why is this requirement necessary? 5. Frictional forces on a block on an inclined plane are directed down the plane (TRUE/FALSE). 9. How does the coefficient of kinetic friction depend on the constant speed of a moving object?
Why is the friction equal to the force?
A crate of mass 180 kg sits on a horizontal floor. The coefficient of static friction between the crate and the floor is 0.4, and the coefficient of kinetic friction is 0.36. You push the crate with a horizontal force of 600 N. What is the magnitude of the frictional force on the crate by the floor in this situation? [Use g = 9.81 m/s2] Incorrect 635.69 N. Incorrect 706.32 N Incorrect...
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