Determine whether or not the path travelled has an effect on the work being performed if the starting point and ending point remain the same. Consider cases when there is only one constant force acting on an object and other times when the forces acting on the object depend on the path. Give an example of each.

Common speech often uses the term "work" to refer to situations where, according to the physics definition of work, there is no actual work done. Find an example of this and explain why the non-physics public considers this work and what a proper physics response would be to this error. You must use ordinary language in an attempt to clarify what is happening do not rely on trigonometry or scalar dot products in you answer . Some examples you could consider include a person pushing on a wall and the wall not moving, a person doing a "bench seatisometric exercise where they squat against a wall, the moon being pulled by gravity as it orbits the earth, etc.

The following graphs give information about a force being applied to move an object. 1. Which force does the most amount of work? 2. Which force does the least amount of work? 5.0 5.0 4.0 4.0 3.0 F1 (N) F3 3.0 2.0 (N) 1.0 1.0 2 3 4 5 6 7 8 1 2 3 4 5 6 7 89 x (m) x (m) 5.0 5.0 4.0 4.0 3.0 F4 3.0 F2 (N) (N) 2.0 2.0 1.0 1.0 2 3 4 5 6 7 8 9 5 6 7 8 9 4 x (m) x (m)

If an object is moved a distanced up an inclined plane at an angle of θ with respect to the horizontal, the normal force from the plane on the object is FN=mgcosθ. What is the work done by the normal force during this motion? A) (mgcosθ)d B) (−mgcosθ)d C) 0 D)mgd E)−mgd

(a) The Eskimo a 50.0-kg sled over level ground with a force of 1.80  102 N exerted horizontally, moving it a distance of 6.30 m over new terrain. If the net work done on the sled is 1.90  102 J find the coefficient of kinetic friction.(b) Repeat the exercise with the same data, finding the coefficient of kinetic friction, but assume the applied force is upwards at a 35.0° angle with the horizontal.

Determine the work done on the block? Determine the final speed of the block?

Suppose the ski patrol raises a rescue sled and victim, having a total mass of 85.0 kg, up a ? = 62.0° slope at constant speed, as shown in the figure. DO NOT USE THE ANGLE SHOWN IN THE FIGURE! USE THE ANGLE IN THE PROBLEM STATEMENT ABOVE. The coefficient of friction between the sled and the snow is 0.130.   Calculate the normal force on the sled (in N).   Calculate the work done (in J) by the force of friction as the sled moves 30.0 m up the hill. (Hint: Think about the direction of the friction force. Should it be different than the direction shown in the figure?).   Calculate the work done (in J) by the tension force in the rope on the sled over this distance. Calculate the work done (in J) done by the force of gravity on the sled over this distance.

1)A block with a mass of 44.0 kg is pushed with a horizontal force of 150 N. The block moves at a constant speed across a level, rough surface a distance of 6.65 m. Please  draw and show your free body diagrams in your answers. This will also help you to solve the problem! (a)What is the work done (in J) by the 150 N force?    (b)What is the coefficient of kinetic friction between the block and the surface?

You are moving the box (m=10kg) across a rough floor by pushing on it at an angle of 20° below the horizontal with force of magnitude F=100N. What is the coefficient of kinetic friction between the box and the floor if it is moving at constant velocity? Present free-body diagram. 10° For a situation as in problem 2, calculate work done by you, work done by the force of friction and the net work done if crate was moved 5m.