Multiple-object systems without friction: Two objects are connected by a very light flexible string as shown in the figure, where M = 0.60 kg and m = 0.40 kg. You can ignore friction and the mass of the pulley. m M (a) Draw free-body diagrams for each object. (b) Calculate the magnitude of the acceleration of each object. (2 m/s²) (c) Calculate the tension in the string. (4.7 N)
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- 77 K/s l A:0. docs.google.com/forms Sove tne peiow question ana then seiect the correct answer Sam pushes toward the right on a box with a force of magnitude 31.0 N. Sarah applies an 11.0 N force on the box in the opposite direction. The magnitude of the kinetic friction force between the box and the very smooth floor is 4.50 N as the box slides toward the right. Also, the magnitude of the normal force is 98 N. Find the box's mass, the box's acceleration in the x-direction, the box's acceleration in the y-direction, and the coefficient of dynamic friction. Choose the correct answers * m = 10 kg, a, = 2.55 m/s?, a, = 0 m/s?,p = 0.5 العربية الإنجليزيةA block with a mass (m) of 74.7 kg slides along a horzontal surface. the coefficent of kinetic friction is .31. THe block has an ititial speed (v0) at 11.6m/s in the positive direction. 1) write and expression for the x component of the frictional force of the block experiences Ff in terms of the given variables and variables avaible. 2) what is the magnitude of the frictional force? 3) how for will the block travel before coming to rest.cs (1) Lab. section 1 rd My courses First Semester 2020/2021 Faculty of Arts and Sciences Physics (1) Lab. section 1 Determine the resultant of two forces if EFx= 40g.wt and EFy=100 g.wt, using method of components Select one: O a. 111.8 g.wt, 63.4° O b. 122.1 g.wt, 55° O c. 107.7 g.wt, 68.2° O d. 116.6 g.wt, 59° O e. 104.4 g.wt, 73.3° page Next pag NEXT ACTIV Jump to.. Physics lab 1 2020-202
- HELP WITH PHYSICS PROBLEM A car has a mass of 1500 kg. If the driver applies the brakes, the maximum friction force that the tires can provide without skidding is about 7000N. If the car is moving at 20 m/s what is the shortest distance in which the car can stop safely?A 45-kg kid starts down a 81-m high, 12.0° slope on frictionless skis. What is the magnitude of the net force on the kid, in Newtons? Use g = 10.0 m/s². Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.1)A shingle slides down a roof having a 30 angle and falls off with a speed of 2.0 m/s.a. How long will it take to hit the ground?b. Calculate the highest point reached by it. 2)A 20.0 kg trunk is pushed across the floor of a moving van by a horizontal force. If thecoefficient of kinetic friction between the trunk and the floor is 0.255, what is the magnitudeof the frictional force opposing the applied force?
- A 400 N body starts up a 30 degree incline (f=D0.2) with a velocity of 3m/s. a. How long must a 500 -N horizontal force act on the body to increase its velocity to 8m/sec? (s) b. How far will the body travel while the force is acting? (m) NOTES ON ANSWERING FOR THIS PROBLEM: 1. ANSWER IN POSITIVE VALUES ONLY 2. ANSWER IN 1 DECIMAL PLACE ONLY (i.e. IF YOUR FINAL ANSWER IS 6.82, INPUT 6.8 IF YOUR FINAL ANSWER IS 19.55 ANSWER 19.6) 400 N 500 N 0.2N 300 N.www2 ke 4 kg In the figure, two masses are connected by a massless string which passes on a frictionless pulley. The mass of 2 kg is connected to a spring that has a spring constant of 400 N/m on a horizontal surface. Before the spring is unstretched, the system is released from rest. Ifr the mass of 4 kg falls a distance of 17 cm before coming to rest, what is the friction force 2. between the mass of 2 kg and the surface? Consider g = 10 m/s 1. 07.5 N 2. 05N 3. 02.5N 4. 08 N 5. 06NVy mปs 3 m/s 1. An object of mass of 4.0 kg is initially moving with a velocity v, as shown. It then experiences a force that changes its velocity to v,, as shown. The object's change in momegtum has a magnitude of which of the following. B. 8.0 kg m/s A. 4.0 kg· m/s C. 12 kg m/s 2. What would be the change in kinetic energy of the object? D. 16 kg m/s A. 16 J B. 18 J. С. 32 J D. 64 J
- 2. When you weigh yourself on solid ground, your weight is 790 N. You stand on a bathroom scale in an accelerating elevator and the scale reads 710 N. (a) Draw a free-body diagram for this situation. Label all forces and relevant infor- mation. (b) Determine the magnitude and direction of the elevator's acceleration. Take g= 9.81 m/s² and show all your work.The pulley system shown in the figure is used to lift a m= 67-kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume the masses of the chains, pulleys, and ropes are negligible. Determine the force F required to lift the crate with constant speed. Determine the tension in the upper chain. Determine the tension in the lower chain.In the figure, is the tension in the rope between the ceiling and Superhero the same as the tension in the rope between Superhero and Trusty Sidekick? A. Jimmy: "Yes, of course it is the same. It's a single rope with a single tension force on both ends. Booyah!" B. Emmy: "I think they are different. The tension in the space between Superhero and Trusty Sidekick only has to hold up Trusty Sidekick, but the tension above Superhero has to hold up both Superhero and Trusty Sidekick. C. Timmy: "Wouldn't your, 'both ends' be the end on the ceiling and the end at Trusty Sidekick? How can you have a different 'both ends' for the space between Superhero and Trusty Sidekick? Wouldn't that only work if they had two different ropes? Or if the rope breaks? The rope clearly holds, so the tension force must be the same everywhere along the rope. " D Figure 438 Superhers and Tunty Sickick hang mess on a pe as they try to figure out what to do next Will the tension the the same everywhere in the p