An emergency worker applies a force to push a patient horizontally for 2.44m on a gurney with nearly frictionless wheels. Determine the work done in pushing the gurney if the force applied is horizontal and of magnitude of 15.5N. Determine the work done if the force, of magnitude 15.5N, is applied at an angle of 25.3° below the horizontal.
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- A 3.7-kg block is pushed 3.3 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?A 2.06 Kg block is pushed 3.31 m along a frictionless horizontal table by a constant 16 N force directed 26.0° below the horizontal, as shown.Determine the work done by the applied forceThe figure shows three forces applied to a trunk that moves leftward by 3.01 mover a frictionless floor. The force magnitudes are F1- 4.50 N, F2 - 9.48 N, and F3- 2.85 N, and the indicated angle is e- 60°. (a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from the trunk? (c) Does the kinetic energy of the trunk increase or decrease? (a) Number i Units (b) (c)
- You are loading a refrigerator weighing 2.29×103 N onto a truck, using a wheeled cart. The refrigerator is raised 1.00 m to the truck bed when it is rolled up a ramp.Calculate the minimum work that must be done by the force you apply if the ramp is at an angle with the horizontal of 35.0°.Calculate the minimum work that must be done by the force you apply if the ramp is at an angle with the horizontal of 14.0°.A horizontal force of 150 N is used to push a 47.5-kg packing crate a distance of 5.00 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 force (b) the coefficient of kinetic friction between the crate and the surfaceA horizontal force of 150 N is used to push a 41.5-kg packing crate a distance of 6.05 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 force (b) the coefficient of kinetic friction between the crate and the surface
- A block of mass 2.00 kg is pushed 3.00 m along a frictionless horizontal table by a constant 17.0N force directed 27.0° below the horizontal. Determine the work done by (a) applied force (b) the normal force exerted by the table (c) the force of gravity. (d) Solve the total work done on the block.A cable exerts a constant upward tension of magnitude 2.06 X 104 N on a 1.80 X 10³ kg elevator as it rises through a vertical distance of 4.10 m. (a) Find the work done by the tension force on the elevator (in J). (b) Find the work done by the force of gravity on the elevator (in J).A cable exerts a constant upward tension of magnitude 1.66 ✕ 104 N on a 1.40 ✕ 103 kg elevator as it rises through a vertical distance of 2.30 m. (a)Find the work done by the tension force on the elevator (in J). (b) Find the work done by the force of gravity on the elevator (in J).
- A 28-kg block is pulled along the ground for a distance of 5.1 m by an 85 N force at an angle of 21 degrees with respect to the horizontal. The coefficient of kinetic friction is 0.22. Find the work done (in J) by the force of friction. Find the work done (in J) by the force of friction.A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough horizontal surface. If the crate moves at constant speed, find (a) the work done by the150-N force and (b) the coefficient ofkinetic friction between the crate and surface.A box is dragged over a rough floor with a constant force of 50N. The force is applied at an angle of 37 ° with the horizontal. A friction force of 10N counteracts motion. The box has gone a distance of 3m to the right. Find the net work done by all the forces acting on the box. (sin37 = 0.60 cos37 = 0.80)