A photograph shows two U.S. Coast Guard icebreakers in an ice field and a simple model for an ice breaking operation. The coefficients of static and kinetic friction for contact between the ship's bow and ice are 0.08 and 0.054, respectively, and the ship produces a thrust of 106 Ib. Assume the ship makes contact with the ice only on its bow, and neglect all forces between the ship's hull and water except for the thrust. T17° T17° Determine the normal and friction forces acting on each side of the ship's bow as it moves through the ice field with constant velocity. The normal force is x 106 lb. 104 lb. The friction force is

A 200-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 34.5° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an acceleration of 0.750 m/s2. Find the tension in the rope.

2.0 kg push 45° Problem 4: (a) The 2 kg wood box in the Figure above on the left slides up a vertical wood wall while you push on it at a 45° angle. The coefficient of kinetic friction for wood on wood is Hk = 0.2. What magnitude force Fpush should you apply to cause the box to slide up at a constant speed? Recall that constant speed means a = 0 m/sec?. Answer: 34.6 N. (b) Let's re-do part (a), but with the box now sliding down the vertical wood wall while you push on it at a 45° angle. Hk is still Hk = 0.2. What magnitude force Fpush should you apply to cause the box to slide down at a constant speed? Recall that constant speed means a = 0 m/sec?. Answer: 23.1 N. Problem 5: The Figure shows two blocks connected by a cord (of negligible mass) that passes over a frictionless pulley (also of negligible mass). The arrangement is known as Atwood's machine. One block has mass mi = 1.3 kg; the other has mass m2 = 2.8 kg. What are: (a) The magnitude of the blocks' acceleration. Answer: 3.6…

You pull on a crate using a rope as image, except the rope is at an angle of 20.0 ∘ above the horizontal. The weight of the crate is 325 N, and the coefficient of kinetic friction between the crate and the floor is 0.230. What must be the tension in the rope to make the crate move at a constant velocity? What is the normal force that the floor exerts on the crate?

Consider the system shown below. The incline plane is fixed and the coefficient kinetic friction between M and 2M is ?1, and coefficient kinetic friction between the plane and 2M is ?2. Let M=2.0kg, ?=22o, ?1=0.14, and ?2=0.25. (a) What is the magnitude of the frictional force on mass M? (b) What is the magnitude of the total frictional force on mass 2M? (c) What is the acceleration of mass M? (d) What is the acceleration of mass 2M?

2 Your answer is partially correct. Try again. In the figure, a slab of mass m, = 40 kg rests on a frictionless floor, and a block of mass m, = 9 kg rests on top of the slab. Between block and slab, the coefficient of static friction is 0.60, and the coefficient of kinetic friction is 0.40. A horizontal force F of magnitude 102 N begins to pull directly on the block, as shown. In unit-vector notation, what are the resulting accelerations of (a) the block and (b) the slab? u = 0- (a) Number T-7.4 -7.4 Units m/s^2 (b) Number i+ Units m/s^2 -0.88 Click if you would like to Show Work for this question: Open Show Work SHOW HINT LINK TO TEXT LINK TO SAMPLE PROBLEM LINK TO SAMPLE PROBLEM VIDEO MINI-LECTURE 10:50 PM search ENG 4/4/2021 ond 111Pgup) pri sc DOUSE insert dele home break 13) 23 bac 3 5. 4 R.

The figure shows a graph of force against distance for a locomotive pushing a carriage along a train track. x (m) Note: Please enter all your answers in this question to full precision. For the case where x:= 330 m x,= 750 m x, =1260 m and Fmax 31000 N, calculate the work done by the locomotive in megajoules for: (a) the part of the journey where the force is increasing (i.e. the first stage): MJ (b) the part of the journey where the force is constant (i.e. the second stage): MJ (c) the part of the journey where the force is decreasing (l.e. the third stage): MJ (d) Calculate the total work done by the locomotive: MJ

2) After playing a game of pinball, you decide to do some calculations on the launching mechanism. The pinball and the plunger have a mass of 0.30 kg and 0.50 kg respectively. The spring coefficient in the pinball machine is 300 N/m. The original length of the spring is 100 mm and the compressed length is 35 mm. If the coefficient of friction between the ball and the surface is 0.15, calculate the velocity of the ball right before it loses contact with the plunger (in m/s). Note that the plunger is never in contact with the ground and assume the ball slides without rolling. [Ans. to check: 1.23 m/s] HO www

a 120 Kg car is being lowered slowly unto the dock usig the hoist A and winch C determine the force in cable AV for the positions

A 200-pound cube cargo of about 50 centimeters on the side. The static coefficient is 0.4 and the dynamic is 0.2. Calculate the maximum acceleration of the car that keeps the box from moving.