3. Of the two frictionless inclined planes with slopes of 30 ° and 53 °, masses m1 = 4kg on the first and m2 = 2kg on the second. These two masses are attached to the two ends of a RAI rope passing through a reel of radius R = 50cm and moment of inertia I = 2 kg m2. Find the accelerations (the linear accelerations of the masses and the angular acceleration of the pulley) and the stresses in the rope. NOTE: The reel is rotating, the tensions in the rope are not equal. т m2 30 53

3. Of the two frictionless inclined planes with slopes of 30 ° and 53 °, masses m1 = 4kg on the first and m2 = 2kg on the second. These two masses are attached to the two ends of a RAI rope passing through a reel of radius R = 50cm and moment of inertia I = 2 kg m2. Find the accelerations (the linear accelerations of the masses and the angular acceleration of the pulley) and the stresses in the rope. NOTE: The reel is rotating, the tensions in the rope are not equal. т m2 30 53

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

| Grip. In the engineering design of handles (such as on manual and powered hand tools) and rails (such as for stair- ways), the grip and possible slip of a hand must be considered. If a hand grips a cylindrical handle with a diameter of 30 mm and with a normal force on the hand at 150 N, what is the maximum tangential frictional torque when the coefficient of static friction is 0.25? Answer: 0.56 N. m
A 45.5‑kg box with the dimensions a×b (the width a = 0.6 m and height b = 1.3 m) is standing on a rough horizontal floor (μs = 1.3). A Professor wants to tip the box over, she pushes on the right side of the box with a horizontal force F = 140 N at a distance h = 1.04 m above the floor as shown in the picture below. The other forces acting on the box are the gravity force (applied to the CoM of the box), the static friction force Fs and the normal force N (both applied to the lower right corner of the box, point Q). Calculate the magnitude and direction of the torques produced by the forces acting on the box relative to the lower right corner (point Q). Assume uniform mass distribution. 1. The torque due to the external force, τQ(due to F) = 2. The torque due to the weight of the box, τQ(due to mg) = 3. The torque due to the friction force, τQ(due to Fs) = 4. The torque due to the normal force, τQ(due to N) =
3. Consider the system shown. A 5.00 m beam supports a mass of 3000 kg attached to a cable. The mass of the beam is 1000 kg. Assume that the mass of the beam is uniformly distributed throughout its length. (a) Determine the tension in the cable (b) Calculate the horizontal and vertical components of the force exerted at point O. 5.00m 3000 kg 45.0°
A 7-kg mass (m1) hangs from a cord that runs through a pulley and back down to attach to a 6-kg mass (m2) that is hanging from the other side. The pulley has a mass of 5.00-kg and a diameter of 20-cm. Find: A) the tension in the cord supporting m1 and the tension in the cord supporting m2; B) the tension in the cord supporting the pulley. C) Why is the answer to B) not equal to the sum of tensions in A)? Why is it not equal to the sum of the three weights?
A 7-kg mass (m1) hangs from a cord that runs through a pulley and back down to attach to a 6-kg mass (m2) that is hanging from the other side. The pulley has a mass of 5.00-kg and a diameter of 20-cm. Find: A) the tension in the cord supporting m1 and the tension in the cord supporting m2; B) the tension in the cord supporting the pulley. C) Why is the answer to B) not equal to the sum of tensions in A)? Why is it not equal to the sum of the three weights?
A student gets his car stuck in a snow drift. Not at a loss, having studied physics, he attaches one end of a stout rope to the vehide and the other end to the trunk of a nearby tree, allowing for a small amount of slack. The student then exerts a force F on the center of the rope in the direction perpendicular to the car-tree line, as shown in the figure below. If the rope is inextensible and if the magnitude of the applied force is 504 N, what is the force on the car? (Assume equilibrium conditions.) KN 12 m Tree 0.50 m
Item 9 A garage door is mounted on an overhead rail (Figure 1). The wheels at A and B have rusted so that they do not roll, but rather slide along the track. The coefficient of kinetic friction is 0.54. The distance between the wheels is 2.00 m, and each is 0.50 m from the vertical sides of the door. The door is uniform and weighs 900 N. It is pushed to the left at constant speed by a horizontal force F, that is applied as shown in the figure. Figure B k A K 2.00 m -3.00 m h F 1 of 1 If the distance his 1.60 m, what is the vertical component of the force exerted on the wheel A by the track? Express your answer to two significant figures and include the appropriate units. μA ? nA = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B If the distance h is 1.60 m, what is the vertical component of the force exerted on the wheel B by the track? Express your answer with the appropriate units. μÅ ? nB = Value Units Submit Request Answer Part…
A fence post of mass m = 8 kg supports a fence with three lengths of barbed wire. The bottom wire is a distance d = 0.35 m from the ground and each wire is a distance 0.35 m above the previous one. Each of these three wires has the tension on it. For this problem, assume that the force exerted by these wires is purely horizontal. An additional guy wire is used to keep the pole upright with a tension of Fa = 490 N. The guy wire attaches to the post at a point h = 0.86 m above the ground and makes an angle of θ = 45 with respect to the horizontal. Write an expression for the tension in any one of the three fence wires. What is the normal force that the ground exerts upward on the post?
An athlete holds a 34.0 N pole in equilibrium by exerting an upward force U with her left hand and a downward force D with her right hand as shown. Point C is the center of gravity of the pole. (Let L₁ 2.25 m, 42 1.35 m, and L3 = = = 0.900 m. Due to the nature of this problem, do not use rounded intermediate values-including answers submitted in WebAssign-in your calculations.) L3 L2 B D g (a) What is the magnitude of U (in N)? N (b) What is the magnitude of D (in N)? N