You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force...
You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 297 N for 6.3 s, during which time the refrigerator moves a distance of 2.9 m at constant velocity.
(a) What is the total work (by all forces) done on the
refrigerator?
J
(b) What is the work done by friction?
J
Homework Answers
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You are pushing a refrigerator across the floor of your kitchen.
You exert a horizontal force...
Homework: Work and Forces A person is pushing a 50 kg refrigerator for 3 seconds with...
Homework: Work and Forces A person is pushing a 50 kg refrigerator for 3 seconds with a constant force of 300 N across the kitchen floor where the coefficient of friction is 0.53: Make a complete model and calculate the total work done on the box, the work done by friction, and the work done by the person.
A 300N force is pulling an 80-kg refrigerator across a horizontal surface. The force acts at...
A 300N force is pulling an 80-kg refrigerator across a horizontal surface. The force acts at an angle of 30.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 10.00 m. Find (a) the work done by the all the forces acting on the refrigerator and the net work done on it.
Problem 1: Work done by constant forces. A 500N force is pulling an 100-kg refrigerator across...
Problem 1: Work done by constant forces. A 500N force is pulling an 100-kg refrigerator across a horizontal surface. The force acts at an angle of 36.9 degress above the surface. The coefficient of kinetic friction us 0.200, and the refrigerator moves a distance od 10.00 m. Determine: a.The work done by all the forces acting on the refrigerator. b. The net work acting on the refrigerator. c. The velocity of the refrigerator at the end of the 10 m,...
You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal...
You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of 263 N in the negative x direction to try and move the 54 kg refrigerator. The coefficient of static friction is 0.67. A) How much static frictional force does the floor exert on the refrigerator? Give both magnitude (in N) and direction. B) What maximum force (in N) do you need to apply before the refrigerator starts to move?
22. the launching velocity of a projectile is 20 m/s at 53 above the horizontal. What...
22. the launching velocity of a projectile is 20 m/s at 53 above the horizontal. What i the vertical component of its velocity at launch? Its horizontal component of air friction, which of these components remains constant throughout t of these components determines the projectile's time in the air? velocity? Neglecting hich he flight path? W uppose you exert 200 N horizontally on your refrigerator to push it acros the kitchen foor at constant velocity (a) How much work is...
A block with a mass of 32.5 kg is pushed with a horizontal force of 150...
A block with a mass of 32.5 kg is pushed with a horizontal force of 150 N. The block moves at a constant speed across a level, rough floor a distance of 6.50 m. (a) What is the work done (in J) by the 150 N force? J (b) What is the coefficient of kinetic friction between the block and the floor?
sally applies a horizontal force of 462N with a rope to drag a wooden crate across a floor with...
sally applies a horizontal force of 462N with a rope to drag a wooden crate across a floor with a constant speed the rope tied to the crate is pulled at an angle of56.0degree and sally moves the crate 24.5m what work is done by the floor through the force of friction between the floor and crate
A man drags a table 3.55 m across the floor, exerting a constant force of 54.0...
A man drags a table 3.55 m across the floor, exerting a constant force of 54.0 N, directed 27.00 above the horizontal. (a) Find the work done by the applied force. 56.00 x (b) How much work is done by friction? Assume the table's velocity is constant. No Response
While moving in, a new homeowner is pushing a box across the floor at a constant...
While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.423. The pushing force is directed downward at an angle θ below the horizontal. When θ is greater than a certain value, it is not possible to move the box, no matter how large the pushing force is. Find that value of θ.
You are pushing horizontally on a couch with a force of 60N, but it's not moving....
You are pushing horizontally on a couch with a force of 60N, but it's not moving. A) How much friction is present at that moment? You push hard until is start moving. After it is moving across the floor you are pushing it so it is going at a constant velocity of 0.25 m/s. B) If you pushing with a force of 140 N, how much friction force is there between the floor and the couch resisting the motion at...
Homework: Work and Forces A person is pushing a 50 kg refrigerator for 3 seconds with a constant force of 300 N across the kitchen floor where the coefficient of friction is 0.53: Make a complete model and calculate the total work done on the box, the work done by friction, and the work done by the person.
22. the launching velocity of a projectile is 20 m/s at 53 above the horizontal. What i the vertical component of its velocity at launch? Its horizontal component of air friction, which of these components remains constant throughout t of these components determines the projectile's time in the air? velocity? Neglecting hich he flight path? W uppose you exert 200 N horizontally on your refrigerator to push it acros the kitchen foor at constant velocity (a) How much work is...
A man drags a table 3.55 m across the floor, exerting a constant force of 54.0 N, directed 27.00 above the horizontal. (a) Find the work done by the applied force. 56.00 x (b) How much work is done by friction? Assume the table's velocity is constant. No Response
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