A tension force of 155 N inclined at 30.0° above the horizontal is used to pull a 35.0 kg shipping crate a distance of 5.10 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface. HINT (a) the work done by the tension force (in J) 688 * Forces in the direction of an object's displacement do positive work on the object and tend to increase the object's speed. J (b) the coefficient of kinetic friction between the crate and surface 0 005 Need Help? Read It Watch it

Draw a sketch and also a good FBD to identify the relevant forces doing work.  A pair of sleds weighs 25 kg (total) and experience a frictional force of 25 N (in total). If a dog team applies a 175 N force pulling it 12 m find:  a) the work done on the sleds by friction  b) the work done on the sleds by the dog team.  C) the net work done (using the net force). How does the net work compare to the answers from the previous two parts of the question? d) What form of energy does the frictional force represent? What form of energy does the net force produce?

A horizontal force of 150 N is used to push a 41.5-kg packing crate a distance of 5.20 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150-N forceJ(b) the coefficient of kinetic friction between the crate and the surface

Paul is helping Tommy push a box at a constant velocity up an incline that makes an angle of 30.0° above the horizontal by applying a 94.0N force in line with the incline over 2.30m. If the coefficient of kinetic friction between the box and the incline is 0.280, a) what is the work done by the pushing force, in Joules? b) What is the mass of the box, in kilograms?