A 59.0-kg box is being pushed a distance of 6.70 m across the floor by a force P whose magnitude is 186 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.239. Determine the work done on the box by each of the four forces that act on the box. Be sure to include the proper plus or minus sign for the work done by each force. (a) Wp= i (b) W = (c) Wmg= i (d) WN= i

A 156-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 29.1° below the horizontal. The coefficient of kinetic friction is 0.244. What should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?

A tension force of 165 N inclined at 25.0° above the horizontal is used to pull a 39.0 kg storage crate a distance of 4.10 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. (a) the work done by the tension force (in J)   (b) the coefficient of kinetic friction between the crate and surface

A 5.40-kg box rests on a horizontal surface. The coefficient of kinetic friction between the box and surface is µk 0.410. A horizontal force pulls the box at constant velocity for 23.0 cm. Find the work done by the applied horizontal force. Submit Answer Tries 0/10 Find the work done the frictional force. Submit Answer Tries 0/10 Find the work done by the net force. Submit Answer Tries 0/10

A 55.4-kg box is being pushed a distance of 8.02 m across the floor by a force P whose magnitude is 169 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.249. Determine the work done on the box by (a) the applied force, (b) the friction force, (c) the normal force, and (d) by the force of gravity. Be sure to include the proper plus or minus sign for the work done by each force. (a) Number Units (b) Number i ! Units J (c) Number Units (d) Number !Units J

A block of mass m = 3.1 kg is placed on a rough incline surface making an angle e = 13.5. with horizontal. A force F parallel to the ground is applied to the block. Due to the applied force the block moved x = 1.2 meter along the inclined surface with constant speed. If the inclined surface has kinetic friction coeficient µk = 0.29 what is the work done by the applied force? Provide your answer with 2 decimal places. Take g = 9.81 m/s² m

A 36.0 kg box initially at rest is pushed 5.45 m along a rough, horizontal floor with a constant applied horizontal force of 150 N. If the coefficient of friction between box and floor is 0.300, find the following. (a) the work done by the applied force (b) the increase in internal energy in the box-floor system due to friction (c) the work done by the normal force (d) the work done by the gravitational force (e) the change in kinetic energy of the box (f) the final speed of the box m/s

A 54-kg box is being pushed a distance of 7.2 m across the floor by a force  whose magnitude is 167 N. The force  is parallel to the displacement of the box. The coefficient of kinetic friction is 0.20. Determine the work done on the box by each of the four forces that act on the box. Be sure to include the proper plus or minus sign for the work done by each force.

A 3.7-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 0 = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is 0.30, determine the following. (a) the work done by F (b) the work done by the force of gravity (c) the work done by the normal force between block and wall (d) By how much does the gravitational potential energy increase during the block's motion?

When you ride a bicycle at constant speed, almost all of the energy you expend goes into the work you do against the drag force of the air. In this problem, assume that all of the energy expended goes into working against drag. The drag force on an object is approximately proportional to the square of its speed with respect to the air. For this problem, assume that F ∝ ν2 exactly and that the air is motionless with respect to the ground unless noted otherwise. Suppose a cyclist and her bicycle have a combined mass of 60 kg and she is cycling along at a speed of 5 m/s. If she doubles her speed to 10 m/s, how much energy does she use in cycling 1 km?A. 20 kJ      B. 40 kJ       C. 200 kJ       D. 400 kJ