There is a table, and a napkin on it. The napkin has a mass mn=88.5 g....
There is a table, and a napkin on it. The napkin has a mass mn=88.5 g. On the napkin, there is a tea cup with mass mc=169.8 g. What is the minimum force required for someone to pull the napkin out from under the tea cup? Assume that between the table and the napkin the friction is µk= 0.241, while the coefficient of static friction between the tea cup and the napkin is µs=0.797. Express your answer in Newtons.
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There is a table, and a napkin on it. The napkin has a mass
mn=88.5 g....
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?
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...
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...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
A brick of mass 10 kg is at rest on a surface inclined at an angle...
A brick of mass 10 kg is at rest on a surface inclined at an angle of 45°. Given the coefficient of static friction is µs = 0.50 between the brick and the surface, what is the minimum force necessary to prevent the brick from slipping? A) 35 N B) 40 N C) 55 N D) 66 N
A small box of mass m1 is sitting on a board of mass m2 and length L.
A small box of mass m1 is sitting on a board of mass
m2 and length L. The board rests on a frictionless
horizontal surface. The coefficient of static friction between the
board and the box is μs. The coefficient of kinetic
friction between the board and the box is, as usual, less than
μs.Throughout the problem, use g for the magnitude of the acceleration
due to gravity. In the hints, use Ff for the magnitude
of the friction force...
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...
Suppose there is a box of books with a mass of 10 kg resting on a...
Suppose there is a box of books with a mass of 10 kg resting on a flat horizontal table, and that the coefficient of static friction between the table and the box is 0.5. If you push on the box with a force of 60 newtons, will the box move? Explain your answer.
Question 2 2 pts The mass of the tray in question 1 is 358 g. If...
Question 2 2 pts The mass of the tray in question 1 is 358 g. If the 1.035 N is force needed to pull the the tray at a steady velocity, what is the coefficient of kinetic friction? (Give you answer to 3 decimal places, and use 9.80 m/s2 for the acceleration of gravity.) Question 3 2 pts The tray in question 1 has a mass of 744 g and a surface area of 75 cm2. If the coefficient of...
To understand kinetic and static friction. A block of mass m lies on a horizontal table....
To understand kinetic and static friction. A block of mass m lies on a horizontal table. The coefficient of static friction between the block and the table is μs. The coefficient of kinetic friction isμk, with μk<μs. Part B Suppose you want to move the block, but you want to push it with the least force possible to get it moving. With what force F must you be pushing the block just before the block begins to move? Part C...
A block of mass m is placed against the vertical front of a cart of mass...
A block of mass m is placed against the vertical front of a cart
of mass M as shown in the figure. (Figure 1)
Assume that the cart is free to roll without friction and that
the coefficient of static friction between the block and the cart
is μs. Derive an expression for the minimum
horizontal force that must be applied to the block in order to keep
it from falling to the ground.
Express your answer in terms of...
A brick of mass 10 kg is at rest on a surface inclined at an angle of 45°. Given the coefficient of static friction is µs = 0.50 between the brick and the surface, what is the minimum force necessary to prevent the brick from slipping? A) 35 N B) 40 N C) 55 N D) 66 N
A small box of mass m1 is sitting on a board of mass
m2 and length L. The board rests on a frictionless
horizontal surface. The coefficient of static friction between the
board and the box is μs. The coefficient of kinetic
friction between the board and the box is, as usual, less than
μs.Throughout the problem, use g for the magnitude of the acceleration
due to gravity. In the hints, use Ff for the magnitude
of the friction force...
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...
Question 2 2 pts The mass of the tray in question 1 is 358 g. If the 1.035 N is force needed to pull the the tray at a steady velocity, what is the coefficient of kinetic friction? (Give you answer to 3 decimal places, and use 9.80 m/s2 for the acceleration of gravity.) Question 3 2 pts The tray in question 1 has a mass of 744 g and a surface area of 75 cm2. If the coefficient of...
A block of mass m is placed against the vertical front of a cart
of mass M as shown in the figure. (Figure 1)
Assume that the cart is free to roll without friction and that
the coefficient of static friction between the block and the cart
is μs. Derive an expression for the minimum
horizontal force that must be applied to the block in order to keep
it from falling to the ground.
Express your answer in terms of...
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