|
Chapter 08, Problem 090 A constant horizontal force moves a 48 kg trunk 5.0 m along...
A 5.0-kg object is pulled along a horizontal surface at a constant speed by an 11.5 N force acting 30degree above the horizontal. How much work is done by this force as the object moves 7.4 m? 78 j 82 J 85 J 74 J 43 j A trunk is pulled by a constant horizontal force of 12 N at an angle of 15degree above the horizontal. The work done by the applied force after the trunk has move 4.15...
(8c8p78) A 70 kg trunk is pushed 7.2 m at constant speed up a 30° incline by a constant horizontal force. The coefficient of kinetic friction between the trunk and the incline is 0.20. Calculate the work done by the applied horizontal force. Submit Answer Tries 0/8 Calculate the work done by the weight of the trunk. Submit Answer Tries 0/8 How much energy was dissipated by the frictional force acting on the trunk? Submit Answer Tries 0/8
A 3.00-kg block is moved up a 37-degree incline by a constant horizontal force of 40.0 N. The coefficient of kinetic friction is 0.10, and the block is displaced 2.00 m up the incline. Note: The applied force is not parallel to the incline. Calculate the work done by gravity and the work done by friction.
The super-villain pushes a trunk of mass 400 kg (880 lbs) down the ramp shown while the superhero resists. The length of the ramp is 4 meters and the angle θ = 25o. The villain pushes with a force Fo = 5000 N and the coefficient of kinetic friction between the trunk and the ramp is 0.6. The superhero is unable to stop the trunk but pushes with a force F1large enough so that the trunk moves down the ramp...
A) A massless rope is tied to a 1.82 kg box sitting on a rough, horizontal surface. The rope is pulled with constant force F acting upward at an angle 15.8o to the horizontal. The coefficient of kinetic friction between the box and the surface is 0.217, and the box slides at constant speed along the table for a distance of 84.4 m. Find the total work done by F, in J. B)Josh, mass 143 kg, is racing against his...
A horizontal force of magnitude 39.5 N pushes a block of mass 4.05 kg a distance of 3.00 m across a floor, where the coefficient of kinetic friction is 0.600. (a) How much work is done by that applied force on the block-floor system? (b) During that displacement, the thermal energy of the block increases by 44.0 J. What is the increase in thermal energy of the floor? (c) What is the increase in the kinetic energy of the block?
A m= 2.00 kg block is pushed against a spring with negligible mass and force constant k= 300. N/m, compressing it d= 0.250 m. When the block is released, it moves along a frictionless, horizontal surface and then up an incline with slope 37.0° and a coefficient of kinetic friction of 0.320. A)What is the speed of the block as it slides along the horizontal surface after having left the spring?B) How far does the object travel up the incline before...
A horizontal force of magnitude 32.1 N pushes a block of mass 3.91 kg across a floor where the coefficient of kinetic friction is 0.579. (a) How much work is done by that applied force on the block-floor system when the block slides through a displacement of 2.99 m across the floor? (b) During that displacement, the thermal energy of the block increases by 33.6 J. What is the increase in thermal energy of the floor? (c) What is the...
A horizontal force of magnitude 41.6 N pushes a block of mass 3.86 kg across a floor where the coefficient of kinetic friction is 0.591. (a) How much work is done by that applied force on the block-floor system when the block slides through a displacement of 3.38 m across the floor? (b) During that displacement, the thermal energy of the block increases by 37.8 J. What is the increase in thermal energy of the floor? (c) What is the...
please qickly
2) A 20 kg box initially at rest is pushed 5 m along a rough, horizontal floor with a constant applied horizontal force of F = 120 N. The coefficient of kinetic friction between box and floor is 0.1, find; a) (12 p) Calculate the work done by the applied force, the gravitational force, the normal force, the friction force (Wr.W, W.,WR) b) (4 p) Find the change in kinetic energy of the box c) (4 p) Find...