An 18 kg wooden crate is initially at rest on a wooden floor. A worker comes...
An 18 kg wooden crate is initially at rest on a wooden floor. A worker comes to move it and pushes it across the floor as shown in the diagram below. The worker applies a force, F, at θ = 40 degrees from the horizontal (below the top of the box). A. How hard must the worker push to start the box sliding across the floor? B. Once the box starts sliding, how hard will the worker push on the box to keep it sliding? C. Excluding 90 degrees, is there an angle θ that would make it impossible to move the box regardless how hard he pushed? If not, explain why not. If yes, find the angle.
Us=.4
Uk=.2
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An 18 kg wooden crate is initially at rest on a wooden floor. A
worker comes...
Work on a sliding crate. A worker pushes a 47.0 Kg crate across a level horizontal...
Work on a sliding crate. A worker pushes a 47.0 Kg crate across a level horizontal floor by applying a constant force of exactly 150.0 N at an angle of 23.0 degrees below the horizontal. The crate begins at rest and ends 15.0m from where it started traveling at 2.6m/s A. What is the work done by the applied force as the crate moves across the floor? B What is the work done by the friction force as the crate...
A factory worker pushes a 29.3 kg crate a distance of 4.1 m along a level...
A factory worker pushes a 29.3 kg crate a distance of 4.1 m along a level floor at constant velocity by pushing downward at an angle of 28 ∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. 1) What magnitude of force must the worker apply to move the crate at constant velocity? 2) How much work is done on the crate by this force when the crate is pushed a distance of...
Two workers are sliding a 300 kg crate across the floor. One worker pushes forward on...
Two workers are sliding a 300 kg crate across the floor. One worker pushes forward on the crate with a force of 380 N while the other worker pull in the same direction with a force of 350 N using a rope. Both forces are horizontal and the crate slides at a constant speed. What is the crate’s coefficient of kinetic friction on the floor?
A factory worker pushes a 28.1 kg crate a distance of 4.1 m along a level...
A factory worker pushes a 28.1 kg crate a distance of 4.1 m along a level floor at constant velocity by pushing downward at an angle of 31 ∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.26. Part A: What magnitude of force must the worker apply to move the crate at constant velocity? Part B: How much work is done on the crate by this force when the crate is pushed a...
A factory worker pushes a 30.9 kg crate a distance of 4.5 m along a level...
A factory worker pushes a 30.9 kg crate a distance of 4.5 m along a level floor at constant velocity by pushing downward at an angle of 30 ∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.26. Part A What magnitude of force must the worker apply to move the crate at constant velocity? Express your answer using two significant figures. Part B Part complete How much work is done on the crate...
A factory worker pushes a 30.0 kg crate a distance of 4.5 m along a level...
A factory worker pushes a 30.0 kg crate a distance of 4.5 m along a level floor at constant velocity by pushing downward at an angle of 30° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. Part A What magnitude of force must the worker apply to move the crate at constant velocity? Part B How much work is done on the crate by this force when the crate is pushed a distance of 4.5 m? Part C How...
Just asking help with Part I A factory worker pushes a 30.0 kg crate a distance...
Just asking help with Part I
A factory worker pushes a 30.0 kg crate a distance of 4.40 m along a level floor by pushing downward at an angle of 28.0° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.260. The Crate is Pushed with Increasing Speed Now assume that, instead of the previous situation, the worker pushes harder (without changing the direction of his push), so that the crate moves with increasing speed....
Option B A wooden crate is being pushed across a horizontal factory floor which is made...
Option B A wooden crate is being pushed across a horizontal factory floor which is made of wood. The crate and its contents have a total mass of 250 kg. What is the minimum force required to keep the crate moving? (Show your work below).
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....
A factory worker pushes a 30.0 kg crate a distance of 5.7 m along a level...
A factory worker pushes a 30.0 kg crate a distance of 5.7 m along a level floor at constant velocity by pushing downward at an angle of 30 degrees below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. How much work is done by gravity? What is the total work done on the crate?
Just asking help with Part I
A factory worker pushes a 30.0 kg crate a distance of 4.40 m along a level floor by pushing downward at an angle of 28.0° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.260. The Crate is Pushed with Increasing Speed Now assume that, instead of the previous situation, the worker pushes harder (without changing the direction of his push), so that the crate moves with increasing speed....
Option B A wooden crate is being pushed across a horizontal factory floor which is made of wood. The crate and its contents have a total mass of 250 kg. What is the minimum force required to keep the crate moving? (Show your work below).
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