A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.44 m/s. The pulling force is 104 N parallel to the incline, which makes an angle of 19.5° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.92 m. (a) How much work is done by the gravitational force on the crate? -152.37 J (b) Determine the increase in internal energy of the crate-incline system owing to friction. 471.0 X A careful free-body diagram of the crate may help you determine the magnitude of the friction force. J (c) How much work is done by the 104-N force on the crate? 511.68 J (d) What is the change in kinetic energy of the crate? 184.95 J (e) What is the speed of the crate after being pulled 4.92 m? 6.47 m/c

A block of mass m = 3.00 kg is pushed a distance d = 6.30 m along a frictionless horizontal table by a constant applied force of magnitude F = 16.0 N directed at an angle 0 = 21.0° below the horizontal as shown in the figure below. m (a) Determine the work done on the block by the applied force. (b) Determine the work done on the block by the normal force exerted by the table. (c) Determine the work done on the block by the force of gravity. (d) Determine the work done by the net force on the block. J

A sledge loaded with bricks has a total mass of 18.6 kg and is pulled at constant speed by a rope inclined at 20.8° above the horizontal. The sledge moves a distance of 20.9 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. (a) What is the tension in the rope? (b) How much work is done by the rope on the sledge? kJ (c) What is the mechanical energy lost due to friction? kJ

A block of mass m = 2.50 kg is pushed d = 2.80 m along a frictionless horizontal table by a constant applied force of magnitude F = 15.0 N directed at an angle 8 = 25.0° below the horizontal as shown in the figure below. m (a) Determine the work done by the applied force. (b) Determine the work done by the normal force exerted by the table. (c) Determine the work done by the force of gravity. J (d) Determine the work done by the net force on the block.

A sledge loaded with bricks has a total mass of 18.8 kg and is pulled at constant speed by a rope inclined at 19.0° above the horizontal. The sledge moves a distance of 20.5 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. (a) What is the tension in the rope? N (b) How much work is done by the rope on the sledge? kJ (c) What is the mechanical energy lost due to friction? k]

The (non-conservative) force propelling a 1.40 x 103-kg car up a mountain road does 6.90 x 106 J of work on the car. The car starts from rest at sea level and has a speed of 28.0 m/s at an altitude of 2.40 x 102 m above sea level. Obtain the work done on the car by the combined forces of friction and air resistance, both of which are non-conservative forces. Number Units

A sled plus passanger with total mass m=55.5 kg is pulled a distance d=22.2 m across a horizontal, snow-packed surface for which the coefficient of kinetic friction is uk=0.155. The pulling force is constant and makes an angle θ=30.7 degrees above horizontal. The sled moves at constant velocity. a) Write an expression for the work done by the pulling force in terms of m, g (acceleration due to gravity), θ, uk, and d. b) What is the work done by the pulling force, in joules? c) Write an expression for the work done on the sled by friction in terms of m, g (acceleration due to gravity), θ, uk, and d. d) What is the work done on the sled by friciton, in joules? e) The work done by the normal force is _____ and the work done by gravity is _____. (Blanks are either negative, zero, or positive) f) What is the net work, in joules, done on the sled?

A sledge loaded with bricks has a total mass of 18.1 kg and is pulled at constant speed by a rope inclined at 20.5° above the horizontal. The sledge moves a distance of 19.0 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. (a) What is the tension in the rope?N(b) How much work is done by the rope on the sledge?kJ(c) What is the mechanical energy lost due to friction?kJ