1. The figure shows three forces applied to a trunk that moves leftward by 2.54m over a frictionless floor. The force magnitudes are F; = 5.08 N, F2= 8.87 N, and F3= 3.39 N, and the indicated angle is e = 60°. %3D a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the nomal force? 14
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- Computation. A 6.24-kg snake slithers at constant speed all the way around a circular path of radius 2.37 m. The coefficient of friction between the ground and the snake is 0.32. Determine the work done by friction, W, on the body of the snake. Wf J Record your numerical answer below, assuming three significant figures. Remember to include a "if/when necessary. X6. A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 22.0 m. She pushes in a direction 29.0° below the horizontal. A 48.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force.505
- a) Determine the work done on the block by the applied force. b) Determine the work done by the net force on the block.How much work is done when you push a crate horizontally with 120 NN across a 11-mm factory floor? Express your answer to two significant figures and include the appropriate units. WW = 1300 JJ If the force of friction on the crate is a steady 70 NN, find the KE gained by the crate. Express your answer to two significant figures and include the appropriate units.8
- THANK YOU10. A 100 kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30° below the horizontal. The coefficient of kinetic friction is 0.20. What should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero? a) 203 N d) 256 N c) 113 N b) 226 N e) 196 N 30.0 mg71. ssm The drawing shows the force-displacement graph for two differ- ent bows. These graphs give the force that an archer must apply to draw the bowstring. (a) For which bow is more work required to draw the bow fully from s = 0 to s = 0.50 m? Give your reasoning. (b) Estimate the additional work required for the bow identified in part (a) compared to the other bow. F cos e 320.0 N Bow 1 240.0 N 160.0 N Bow 2 80.0 N 0.10 m 0.30 m 0.50 m Problem 71
- Q30Please help!2. A 3.00 kg object is initially at rest on a horizontal surface. An applied force acts on the object in the +x-direction. Assume there is friction in the system as well. The Net Work done on the object is 50.0 J over a distance of 7.00 m. a) What is the object's Change in Kinetic Energy? Do Not Overthink this! b) What Net Force acted on this object?