A concrete block is pulled 7.0 m across a frictionless surface by means of a rope. The tension in the rope is 40 N; and the net work done on the block is 247 J. What angle does the rope make with the horizontal? A) A) 28° B B) 41° c) C) 47° D) D) 62°

A concrete block is pulled 7.0 m across a frictionless surface by means of a rope. The tension in the rope is 40 N; and the net work done on the block is 247 J. What angle does the rope make with the horizontal? A) A) 28° B B) 41° c) C) 47° D) D) 62°

Name: A concrete block is pulled 7.0 m across a frictionlesssurface by mean
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: A concrete block is pulled 7.0 m across a frictionlesssurface by means of a rope. The tension in the ropeis 40 N; and the net work done on the block is 247J. What angle does the rope make with thehorizontal?A) A) 28°В) в) 41°c) C) 47°D) D) 62°

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A block of mass m = 2.00 kg is pushed a distance d = 7.80 m along a frictionless, horizontal table by a constant applied force of magnitude F = 17.0 N directed at an angle θ = 26.0° below the horizontal as shown in the figure below. 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 gravitational force. d) Determine the work done on the block by the net force on the block.
A 32-kg block is pulled along the ground for a distance of 4.9 m by a 57 N force at an angle of 21 degrees with respect to the horizontal. The coefficient of kinetic friction is 0.21. a) Find the work done (in J) by the applied force. b) Find the work done (in J) by the normal force exerted by the ground. c) Find the work done (in J) by the force of gravity.
An object slides on an inclined plane that has a slope of 30 degrees. The height of one end of the inclined plane relative to the other end is 2.0 m. The mass of the object is 2.5 kg and the coefficient of kinetic friction between the object and the plane is 0.2. How much work is done by the force of gravity when an object moves from the top to the bottom of an inclined plane?
A sledge loaded with bricks has a total mass of 17.9 kg and is pulled at constant speed by a rope inclined at 19.4° above the horizontal. The sledge moves a distance of 20.4 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
A block is displaced vertically by Ar = 2.5 m under the influence of three forces, F = 4.0 N, FR = 6.0 N, and F = 8.0 N as shown in the diagram. The angles 0c = 15°. There are no other forces acting on the block. What is the net work done by these three forces on the block? FB %3D %3D %3D 0c FA W = FArcos(0)
A piano mover is pushing a 240-kg piano a distance d=5.0 m with a force parallel to the floor of magnitude FP=480N. The coefficient of kinetic friction between the floor and the piano is μ?=0.180. a)Find the work done by the piano mover on the piano. b)Find the work done by the friction force. c)Find the work done by the gravitational and normal forces. d)Find the speed of the piano after it moved 5.0 m assuming it started from rest.
Starting from rest at t = 0, a 5.0-kg block is pulled across a horizontal surface by a constant horizontal force having a magnitude of 12 N. If the coefficient of friction between the block and the surface is 0.20, at what rate is the 12-N force doing work at t = 5.0 s? 26 kW 0.12 kW 0.14 kW 12 kW 0.13 kW
A runner travels I.5 laps around a circular track in a time of 50 s. The diameter of the track is 40 m and its circumference is 126 m. Find (a) the average speed of the runner and (b) the magnitude of the runner's average velocity. Be careful here; average speed depends on the total distance traveled, whereas average velocity depends on the displacement at the end of the particular journey.
Starting from rest, a 6.2-kg block slides 3.2 m down a rough 37-degree incline. The coefficient of kinetic friction between the block and the incline is μk = 0.55. a) Determine the work done by the friction force between block and incline. b) Determine the work done by the normal force. c) Determine the net work done on the block.
An object of mass 5 kg is pulled by a constant force of 6.2 N at an angle of 350 above the horizontal through a distance of 7 m. What is the work done on the object? Neglect friction. An object of mass 5 kg is pulled by a constant force of 6.2 N at an angle of 350 above the horizontal through a distance of 7 m. What is the work done on the object? Neglect friction. 55 J 46 J 43 J 36 J
If an object is moved a distanced up an inclined plane at an angle of θ with respect to the horizontal, the normal force from the plane on the object is FN=mgcosθ. What is the work done by the normal force during this motion? A) (mgcosθ)d B) (−mgcosθ)d C) 0 D)mgd E)−mgd
A dog (of mass 50 kg) is happily sliding down a hill that has a coefficient of kinetic friction of 0.2. The hill has a slope of 20 degrees. Assuming that the dog is letting gravity do all the work, what is the magnitude of the dog's acceleration down the slope? 0.51 O 3.51 O 2.51 1.51 600