1. You want to move a 500-N crate across a level floor. To start the crate...
1. You want to move a 500-N crate across a level
floor. To start the crate moving, you have to
pull with a 230-N horizontal force. Once the crate breaks loose and
starts to move, you can
keep it moving at constant velocity with only 200 N. What are the
coefficients of static and
kinetic friction?
2. In the previous example, suppose you move the crate by pulling
upward on the rope at an
angle of 30.0◦ above the horizontal. How hard must you pull to keep
it moving with constant
velocity? Assume that µk = 0.40.
Homework Answers
Add Answer to:
1. You want to move a 500-N crate across a level
floor. To start the crate...
You have a crate full of books with a total mass of 32 kg that you...
You have a crate full of books with a total mass of 32 kg that you have to move from your bedroom to the door of your apartment using a rope attached to the crate. The coefficient of static friction between the crate and the floor is 0.65, and the coefficient of kinetic friction is 0.45 (a) Pulling the rope horizontally, what is the minimum force you have to pull with to get the crate to start moving? (b) Once...
A 27 kg crate rests on a floor. A horizontal pulling force of 110 N is...
A 27 kg crate rests on a floor. A horizontal pulling force of 110 N is needed to move the crate with a constant velocity. What is the coefficient of kinetic friction between the crate and the floor?
3. A horizontal force of 375 N is needed to just set a 50.0 kg crate,...
3. A horizontal force of 375 N is needed to just set a 50.0 kg crate, lying on a level floor in motion, while a horizontal force of 189 N is needed to keep it in motion at constant velocity. (a) Find the coefficients of static and kinetic friction. (b) If the 375 N force is maintained after the crate starts to move, what is the acceleration of the crate? Show the free body diagram in each of the 3...
A crate of books has a weight 455 N. A rope is attached to the crate....
A crate of books has a weight 455 N. A rope is attached to the crate. You take the rope and pull the crate at a constant speed along a concrete floor for a distance of 18.4 m. You pull the rope at an angle of 28.5 degrees. The co-efficient of kinetic friction between the wooden crate and the concrete floor is 0.332 Find the following Tension in the rope The work done by you pulling the crate Check
A 50-N crate sits on a horizontal floor where the coefficient of static friction between the...
A 50-N crate sits on a horizontal floor where the coefficient of static friction between the crate and the floor is .50 and that of kinetic is .40 gradually increasing horizontal force to the right is applied to the crate how would you describe the motion of the box at the moment forces reached to 20 N (a) Not moving (b) not moving bit anootbto move (c) moving with a constant speed (d) Accelerating
To move a large crate across a rough floor, you push on it with a force...
To move a large crate across a rough floor, you push on it with a force F at an angle of 21 ∘ below the horizontal A.)Find the force necessary to start the crate moving, given that the mass of the crate is 32 kg and the coefficient of static friction between the crate and the floor is 0.60.
1) A 1,340-N crate is being pushed across a level floor at a constant speed by...
1)
A 1,340-N crate is being pushed across a level floor at a constant speed by a force F of 250 N at an angle of 20.0 degree below the horizontal, as shown in the figure (a) below. What is the coefficient of kinetic friction between the crate and the floor? If the 250-N force is instead pulling the block at an angle of 20.0 degree above the horizontal, as shown in the figure (b), what will be the acceleration...
To move a large crate across a rough floor, you push on it with a force...
To move a large crate across a rough floor, you push on it with
a force F at an angle of 21 ? below the horizontal, as
shown in the figure (Figure 1) .
Find the force necessary to start the crate
moving, given that the mass of the crate is 32 kg and the
coefficient of static friction between the crate and the floor is
0.57.
A 1300 N crate is being pushed across a level floor at a constant speed by...
A 1300 N crate is being pushed across a level floor at a constant speed by a force F of 400 N at an angle of 20° below the horizontal as shown in Figure P4.37a. NI (a) Figure P4.37 (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 400 N force is instead pulling the block at an angle of 20° above the horizontal as shown in Figure P4.37b, what will be...
By pulling a on rope attached to a crate of mass 77.0 kg, the crate is...
By pulling a on rope attached to a crate of mass 77.0 kg, the crate is dragged across a floor. Let the coefficient of static friction between the crate and the floor be 0.830 and the angle between the rope and horizontal is 39.1 °. Find the minimum force required to move the crate. At a later time the crate is now dragged with this same force, and has already started moving, on a wet floor where the kinetic friction...
You have a crate full of books with a total mass of 32 kg that you have to move from your bedroom to the door of your apartment using a rope attached to the crate. The coefficient of static friction between the crate and the floor is 0.65, and the coefficient of kinetic friction is 0.45 (a) Pulling the rope horizontally, what is the minimum force you have to pull with to get the crate to start moving? (b) Once...
A 27 kg crate rests on a floor. A horizontal pulling force of 110 N is needed to move the crate with a constant velocity. What is the coefficient of kinetic friction between the crate and the floor?
3. A horizontal force of 375 N is needed to just set a 50.0 kg crate, lying on a level floor in motion, while a horizontal force of 189 N is needed to keep it in motion at constant velocity. (a) Find the coefficients of static and kinetic friction. (b) If the 375 N force is maintained after the crate starts to move, what is the acceleration of the crate? Show the free body diagram in each of the 3...
A crate of books has a weight 455 N. A rope is attached to the crate. You take the rope and pull the crate at a constant speed along a concrete floor for a distance of 18.4 m. You pull the rope at an angle of 28.5 degrees. The co-efficient of kinetic friction between the wooden crate and the concrete floor is 0.332 Find the following Tension in the rope The work done by you pulling the crate Check
1)
A 1,340-N crate is being pushed across a level floor at a constant speed by a force F of 250 N at an angle of 20.0 degree below the horizontal, as shown in the figure (a) below. What is the coefficient of kinetic friction between the crate and the floor? If the 250-N force is instead pulling the block at an angle of 20.0 degree above the horizontal, as shown in the figure (b), what will be the acceleration...
To move a large crate across a rough floor, you push on it with
a force F at an angle of 21 ? below the horizontal, as
shown in the figure (Figure 1) .
Find the force necessary to start the crate
moving, given that the mass of the crate is 32 kg and the
coefficient of static friction between the crate and the floor is
0.57.
A 1300 N crate is being pushed across a level floor at a constant speed by a force F of 400 N at an angle of 20° below the horizontal as shown in Figure P4.37a. NI (a) Figure P4.37 (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 400 N force is instead pulling the block at an angle of 20° above the horizontal as shown in Figure P4.37b, what will be...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago