A dockworker loading crates on a ship finds that a 20-kg crate, initially at rest on...
A dockworker loading crates on a ship finds that a 20-kg crate, initially at rest on a horizontal surface, requires a 73-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor.
Homework Answers
As before it starts moving, the friction force will be static and Fs= uMg. Hence u(static)= Fs/uMg. i.e. 73/(20×9.81). i.e. 0.37.
After it starts moving kinectic friction will be in picture hence u(kinetic)= 51/196.2= 0.26. Fk/Mg.
Add Answer to:
A dockworker loading crates on a ship finds that a 20-kg crate,
initially at rest on...
A dockworker loading crates on a ship finds that a 25-kg crate, intially at rest on...
A dockworker loading crates on a ship finds that a 25-kg crate, intially at rest on a horizontal surface, requires a 72-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor. static friction kinetic friction
A van accelerates down a hill (see figure below), going from rest to 30.0 m/s in...
A van accelerates down a hill (see figure below), going from rest to 30.0 m/s in 6.30 s. During the acceleration, a toy m = 0.490 kg) hangs by a string from the van's ceiling. The acceleration is such that the string remains perpendicular to the ceiling. (a) Determine the angle e. (b) Determine the tension in the string. +-/2 points SerCP10 4.P.039. My Notes + Ask Your Teacher A dockworker loading crates on a ship finds that a 21-kg...
Two students are pushing identical crates across a frictionless floor. The crates are initially at rest....
Two students are pushing identical crates across a frictionless floor. The crates are initially at rest. Bing applies a horizontal force of 19 N to his crate. Bob, who is shorter than Bing, pushes on his crate at an angle of 33° below the horizontal, also with a force of 19 N. Find the ratio of the masses of the two crates if Bing’s crate is moving at twice the speed of Bob’s crate after they have traveled a distance...
A 28.0-kg block is initially at rest on a horizontal surface. A horizontal force of 73.0...
A 28.0-kg block is initially at rest on a horizontal surface. A horizontal force of 73.0 N is required to set the block in motion, after which a horizontal force of 55.0 N is required to keep the block moving with constant speed. (a) Find the coefficient of static friction between the block and the surface. (b) Find the coefficient of kinetic friction between the block and the surface.
A 39 kg crate sits on a horizontal floor. The coefficients of static and kinetic friction...
A 39 kg crate sits on a horizontal floor. The coefficients of static and kinetic friction between the crate and floor are 0.6 and 0.4, respectively. Use a coordinate system with +y pointing upwards. a) How much force do you need to apply to get the crate sliding along the floor? [ , , ] N b) If the crate is moving with a speed of [0.8, 0, 0] m/s, what force is it experiencing due to friction as it slides? [ , , ] N...
A crate of toys (25 kg) is at rest on a rough horizontal surface. The coefficients...
A crate of toys (25 kg) is at rest on a rough horizontal surface. The coefficients of static and kinetic friction (respectively) are 0.5 and 0.2. What minimum force is required to cause the crate to move? Assuming this force is maintained once the crate begins moving, with what acceleration does the crate move?
Find Ffs and Fk for each of the following Problems: 1. A 24 kg crate initially...
Find Ffs and Fk for each of the following
Problems: 1. A 24 kg crate initially at rest on a flat surface requires a 75 N force to the 2. Once the crate in #1 is in motion, a horizontal force of 53 N keeps the 3. A museum curator moves artifacts around. Find the Ffs and Fk for each of right to set it in motion. Find the us. 5 3189 crate moving at a constant velocity. Find uk....
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...
explain why please 3.-In moving a 35.0-kg box from one side of a classroom to the...
explain why please
3.-In moving a 35.0-kg box from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the box in motion, and a force of 240 N is necessary to keep it in motion at a constant speed. What are the coefficients of (a) static and (b) kinetic friction between the box and the floor? Starting the motion Moving at constant speed 300 N 35 kg...
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
A dockworker loading crates on a ship finds that a 25-kg crate, intially at rest on a horizontal surface, requires a 72-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor. static friction kinetic friction
A van accelerates down a hill (see figure below), going from rest to 30.0 m/s in 6.30 s. During the acceleration, a toy m = 0.490 kg) hangs by a string from the van's ceiling. The acceleration is such that the string remains perpendicular to the ceiling. (a) Determine the angle e. (b) Determine the tension in the string. +-/2 points SerCP10 4.P.039. My Notes + Ask Your Teacher A dockworker loading crates on a ship finds that a 21-kg...
Find Ffs and Fk for each of the following
Problems: 1. A 24 kg crate initially at rest on a flat surface requires a 75 N force to the 2. Once the crate in #1 is in motion, a horizontal force of 53 N keeps the 3. A museum curator moves artifacts around. Find the Ffs and Fk for each of right to set it in motion. Find the us. 5 3189 crate moving at a constant velocity. Find uk....
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...
explain why please
3.-In moving a 35.0-kg box from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the box in motion, and a force of 240 N is necessary to keep it in motion at a constant speed. What are the coefficients of (a) static and (b) kinetic friction between the box and the floor? Starting the motion Moving at constant speed 300 N 35 kg...
Most questions answered within 3 hours.
-
Given a standardized normal distribution (with μ = 0 and a σ =
1), what is...
asked 27 minutes ago -
Given the following information:
acetic acid
CH3COOH
Ka = 1.8×10-5
triethylamine
(C2H5)3N
Kb = 5.2×10-4
(1)...
asked 13 minutes ago -
Potassium permanganate(KMNO4)is has a solubility of 6.4 g/ 100 g
of water at 20ºC, and 250...
asked 10 minutes ago -
51.
As the marginal propensity to expend rises, the multiplier:
decreases.
is impossible to determine.
increases....
asked 17 minutes ago -
The Baldwin Company currently has the following balances on their
balance sheet:
Total
Liabilities
$69,309
Common...
asked 20 minutes ago -
A quiet town in Kansas has 10 people, all of whom have the same
preferences. There...
asked 25 minutes ago -
Summarize what an organization needs from a leader.
a. Analyze what might happen to an organization...
asked 28 minutes ago -
How would one critically evaluate an organizations marketing
strategies from the viewpoint of its consumers, as...
asked 27 minutes ago -
Company XYZ know that replacement times for the quartz time
pieces it produces are normally distributed...
asked 42 minutes ago -
A) Write the acid-base reaction that occurs between Na2HPO4 and
NaOH
B) Write the possible reactions...
asked 56 minutes ago -
What advantages does the Natural Law Theory have in comparison
with the Divine Command Theory? Explain...
asked 1 hour ago -
A diver comes off a board with arms straight up and legs
straight down, giving her...
asked 1 hour ago