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.
-
1-Write an algorithm to get two numbers from the user (as
inputs) and calculate the sum...
asked 2 hours ago -
Define white-collar crime. What is the difference between
offender and offense-based definitions of white-collar crime? What...
asked 3 hours ago -
Consider a reaction which is 1st order with respect to A and 1st
order with respect...
asked 3 hours ago -
c++
The length of the hypotenuse of a right-angled triangle is the
square root of the...
asked 3 hours ago -
When a metal rod is heated, not only its resistance but also its
length and cross‐sectional...
asked 3 hours ago -
write a c++ program that computes the L^1 - Norm of a given
vector (L^1 norm...
asked 3 hours ago -
A manufacturer of banana chips would like to know whether its
bag filling machine works correctly...
asked 3 hours ago -
Complete the chapter case, "Turnover Analysis".
Chapter Case
Turnover Analysis
You recently completed your company’s new...
asked 3 hours ago -
What is the pH of solutions having the following H3O+
concentrations? Identify each as acidic, basic,...
asked 3 hours ago -
How does over-voltage of the diode usually occur?
asked 4 hours ago -
If you step on a dirty nail, your doctor will recommend you
update your Tetanus vaccination....
asked 4 hours ago -
Suppose that decreases in the price of milk lead to decrease s
in the retail prices...
asked 4 hours ago