A contestant in a winter games event pushes a 56.0-kg rock across a frozen lake with a force of 25 N at 30° below the horizontal as shown in Figure (a) below, and it moves with an acceleration of 0.39 m/s² to the right. (a) (b) (a) What is the normal force (in N) exerted by the lake surface on the rock? X Did you draw a free-body diagram and identify the forces acting on the system? Did you consider all applicable forces (or component of forces) in the vertical direction? N (b) Instead of pushing on the rock, the contestant now pulls on it with a rope over his shoulder at the same angle above the horizontal as in part (a). See Figure (b) above. Now what is the normal force (in N) exerted by the lake surface on the rock? Enter a number. change in the direction of the rope in this case. N

A contestant in a winter games event pushes a 56.0-kg rock across a frozen lake with a force of 25 N at 30° below the horizontal as shown in Figure (a) below, and it moves with an acceleration of 0.39 m/s² to the right. (a) (b) (a) What is the normal force (in N) exerted by the lake surface on the rock? X Did you draw a free-body diagram and identify the forces acting on the system? Did you consider all applicable forces (or component of forces) in the vertical direction? N (b) Instead of pushing on the rock, the contestant now pulls on it with a rope over his shoulder at the same angle above the horizontal as in part (a). See Figure (b) above. Now what is the normal force (in N) exerted by the lake surface on the rock? Enter a number. change in the direction of the rope in this case. N

Name: A contestant in a winter games event pushes a 56.0-kg rock across a f
Uploaded: 2024-03-20T06:57:57.000Z
Channel: Bartleby
Description: A contestant in a winter games event pushes a 56.0-kg rock across a frozen lake with a force of 25 N at 30° below the horizontal as shownin Figure (a) below, and it moves with an acceleration of 0.39 m/s² to the right.(a)(b)(a) What is the normal fo

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 rifle with a barrel length of 60 cm fires a 15 g bullet with a horizontal speed of 350 m/s. The bullet strikes a block of wood and penetrates to a depth of 13 cm. You may need to review (Page). For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Ready for takeoff. Part A What resistive force (assumed to be constant) does the wood exert on the bullet? Express your answer with the appropriate units. Part B. How long does it take the bullet to come to rest after entering the wood? Express your answer with the appropriate units.
y Problem 3: The diagram shows the all of the forces acting on a body of mass 2.31 kg. The three forces have magnitudes F₁ = 50.6 N, F2 = 20.8 N, and F3 = 75.8 N, with directions as indicted in the diagram, where 0 = 39.6 degrees and p = 30.1 degrees. The dashed lines are parallel to the x and y axes. At t = 0, the body is moving at a speed of 7.93 m/s in the positive x direction. Part (a) What is the x component of the acceleration in m/s²? ax = || Ę Lª F $ F
THIS QUESTION IS NOT GRADED.
Three blocks rest on a frictionless, horizontal table (see figure below), with m₁ block 1, and the acceleration of all three blocks is found to be 3.2 m/s². (a) Find m₂. m1 kg m₂ m3 = 5 kg and m3 = 14 kg. A horizontal force F = 117 N is applied to (b) What is the magnitude of the normal force between blocks 2 and 3? N
A block whose weight is 40 N rests on a horizontal surface. The coefficient of static friction between the block and the surface is 0.50. A string is attached to the block. The string is pulled horizontally with a force of 15 N. Which one of the following statements is correct? O The magnitude of the force of friction on the block is 20 N. O The magnitude of the force of friction on the block is 15 N. O The force of friction cannot be determined because the coefficient of kinetic friction is not given. O The force of friction cannot be determined because the normal force of the surface on the block is not known. O The magnitude of the force of friction on the block is 5 N.
A 2.50-kg object is moving in a plane, with its x and y coordinates given by x = 6t² - 2 and y = 5t³ + 1, where x and y are in meters and t is in seconds. Find the magnitude of the net force acting on this object at t = 1.60 s. N
calculate the magnitude of a normal force on a 22.7 kg for the following circumstances. c. the block is resting on the floor of an elevator that is accelerating upward at 2.53 m/s^2. d. the block is on the level surface and a force of 115 N is exerted on it at an angle of 40.8 degrees below the horizontal.
Å A student tries to push a 27.7 kg desk across the room. She pushes at a downward angle of 39° (measured from the horizontal) with a force of 240 N. As a result, the desk moves with a constant velocity of 1.22 m/s. How much friction is present? F₁ = How much does the desk weigh? 11 N FN = Fg How much Normal force must be present? N N
You are given the job of moving a refrigerator of mass 125 kg across a horizontal floor. The coefficient of static friction between the refrigerator and the floor is 0.49. What is the minimum force that is required to just set the refrigerator into motion? N