Black Panther (mass 80.0 kg) is trying to save Spiderman (mass 70.0 kg) and Supergirl (mass 60.0 kg) who have been rendered powerless by an evil villain. The three are attached by two ropes as shown and are sliding off the top of a building. The coefficient of friction between Black Panther's feet and the ground is 0.550. Determine: a) The force of kinetic friction between Black Panther's feet and the ground. b) The acceleration of the system. c) The forces of tension, FT1 and FT2, in the two ropes. Black Panther Frictionless pulley Spiderman a Supergirl

Black Panther (mass 80.0 kg) is trying to save Spiderman (mass 70.0 kg) and Supergirl (mass 60.0 kg) who have been rendered powerless by an evil villain. The three are attached by two ropes as shown and are sliding off the top of a building. The coefficient of friction between Black Panther's feet and the ground is 0.550. Determine: a) The force of kinetic friction between Black Panther's feet and the ground. b) The acceleration of the system. c) The forces of tension, FT1 and FT2, in the two ropes. Black Panther Frictionless pulley Spiderman a Supergirl

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 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.442 and the coefficient of kinetic friction is 0.240. How much force is needed to begin moving the book? How much force is needed to keep the book moving at constant speed once it begins moving?
One block rests upon a horizontal surface. A second identical block rests upon the first one. The coefficient of static friction between the blocks is the same as the coefficient of static friction between the lower block and the horizontal surface. A horizontal force is applied to the upper block, and its magnitude is slowly increased. When the force reaches 49.3 N, the upper block just begins to slide. The force is then removed from the upper block, and the blocks are returned to their original configuration. What is the magnitude of the horizontal force that should be applied to the lower block, so that it just begins to slide out from under the upper block?
Your friend asks for help moving a box across the apartment floor and tells you that the box weighs 422 N. Your friend also informs you the box, currently motionless, has a coefficient of static friction (us=0.42) and a coefficient of kinetic friction (u=0.31) between it and the floor. You apply a horizontal force of 208 N on the box. Calculate the magnitude of the frictional force, f, acting on the box while you apply that force. Take the acceleration of gravity to be 9.81 m/s². f = O Search N 7:59 PM 11/29/2022
Two blocks of mass M and m are sitting on a horizontal floor. The blocks are touching. The coefficient of static friction between the smaller block and the floor is μs1, and the coefficient of static friction between the larger block and the floor is μs2. What is the minimum push force F so that the blocks begin to move?
As shown on the right, a box is at rest on an incline plane. The mass of the box is 9.59 kg. The plane is inclined by an angle 0 = 53.3°. The coefficient of static friction between the box and the plane is µ = 0.765, while the coefficient of kinetic friction is µ = 0.438 . The force P = 98.6 N is acting up the plane as shown. What is the magnitude of the static friction force acting on the block helping to keep the mass at rest on the plane? m 0
2 crates are connected to each other by a rope. One crate(m=17kg) is sitting by the ledge of a cliff, and has a coefficient of friction between itself and the ground of 0.21. The second crate(m=11kg) is hanging off the edge of the cliff. Assuming that the hanging crate is heavy enough to pull the crate by the ledge to the right. Find a) and b) and Draw FBD for each crate a) The acceleration of the system b) The tension force that connects 2 crates together
Ross and Rachel are fighting if they were on a break. Ross is trying to get his stuff weighing 150. N placed on an inclined plane by pulling it upwards parallel to the inclined plane with 150. N force. However, Rachel is trying to stop Ross by exerting 50.0 N perpendicular to the inclined plane. The coefficients of friction between the box and the incline are us = 0.450 and uk = 0.350. 50 N 53.4 N 75.0 N 20.1 N 100.0 N F·R·I·E·N·D·S 30⁰° 150 N Which of the following is closest to the magnitude of the ACTUAL frictional force between the object and the incline at the instant shown?
A block M1 of mass 10.0 kg sits on top of a larger block M2 of mass 20.0 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.440. The kinetic friction coefficient between the lower block and the flat surface is 0.140. A horizontal force F= 97 N pushes against the upper block, causing it to slide. The friction force between the blocks then causes the lower block to slide also. What is the magnitude of the acceleration of the upper block? What is the magnitude of the acceleration of the lower block?
A 2.5 kg block is initially at rest on a horizontal surface. A horizontal force F of magnitude 6.5 N and a vertical force P are then applied to the block. The coefficients of friction for the block and surface are us = 0.43 and MK = 0.22. P (a) Determine the magnitude of the frictional force acting on the block if the magnitude of P is 8.0 N. (b) Determine the magnitude of the frictional force acting on the block if the magnitude of P is 10.0 N. (c) Determine the magnitude of the frictional force acting on the block if the magnitude of P is 12.0 N.
Sammy is doing a strength testing session on the turf in preparation for the upcoming basketball season. Sammy's mass is 55 kg and she is trying to push a 105 kg sled across the artificial turf outside on Raymond Field. The coefficient of static friction between the sled and the turf is 0.3. If Sammy pushes only horizontally against the sled, how much force must she push with to just initiate movement of the sled?
Mary applies a force of 80 N to push a box with an acceleration of 0.54 m/s2. When she increases the pushing force to 87 N, the box's acceleration changes to 0.84 m/s2. There is a constant friction force present between the floor and the box. (a) What is the mass of the box in kilograms? kg (b) What is the coefficient of kinetic friction between the floor and the box?
You are lowering two boxes, one on top of the other, down the ramp shown in the figure by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 15.0 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.486, and the coefficient of ▶ ▶ ▼ static friction between the two boxes is 0.823. You may want to review (Page) For help with math skills, you may want to review: Resolving Vector Components Calculating Trigonometric Function Values For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Toboggan ride with friction II. Part A Part B Part C 32.0 kg 48.0 kg IVE ΑΣΦ T= 356 4.75 m What force T do you need to exert to accomplish this? Express your answer in newtons. ► View Available Hint(s) 2.50 m ? N