Homework: Work and Forces A person is pushing a 50 kg refrigerator for 3 seconds with...
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
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,...
Consult to explore a model for solving this problem. A person pushes on a 61-kg refrigerator with a horizontal force of -250 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.66. (a) If the refrigerator does not move, what are the magnitude and direction of the static frictional force that the floor exerts on the refrigerator? (b) What is the magnitude of the largest pushing force that can be...
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.
Could you please show your work as well? Thank you!
A person pushes on a 55-kg refrigerator with a horizontal force of -266 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.67, (a) If the refrigerator does not move, what are the magnitude and direction of the static frictional force that the floor exerts on the refrigerator? Static frictional force = (b) What is the magnitude of the largest...
John is pushing an 50 kg box. Fs max is found to be 125 N and the normal force is 490 N. The coefficient of static friction is 0.255. Say that while John is pushing the box, Sally who you happen to know is 80 kg sits on top of the box. The new normal force is found to be 1274 N. Sally then holds a present of an unknown mass and the new Fs max is 450 and coefficient...
2.) A person is pushing a 750 kg car a distance of 30m with a constant pushing force of 550 N that is parallel to the ground. If the car is accelerated from rest to a speed of 1.5 m/s, find the coefficient of kinetic friction between the tires and the road. Use the Work kinetic energy theorem.
A warehouse worker is pushing a 90.0 kg crate with a horizontal force of 276 N at a speed of v = 0.865 m/s across the warehouse floor. He encounters section of the floor that is 0.75 m long and where the coefficient of kinetic friction between the crate and floor is 0.357. (a) Determine the magnitude and direction of the net force acting on the crate while it is pushed over the rough section of the floor. (b) Determine the net...
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...
Consult Multiple-Concept Example 9 to explore a model for solving this problem. A person pushes on a 55-kg refrigerator with a horizontal force of -260 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.64. (a) If the refrigerator does not move, what are the magnitude and direction of the static frictional force that the floor exerts on the refrigerator? (b) What is the magnitude of the largest pushing force...