P -40° A A lawn roller which weight 25kg is pulled up at a 15° slope at a constant velocity. Determine the required pulling force, P. (CO2, PO1, C3)
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- A stubborn dog is being walked on a leash by its owner. At one point, the dog encounters an interesting scent at some spot on the ground and wants to explore It in detail, but the owner gets impatient and pulls on the leash with force along the leash. (a) What is the magnitude of the pulling force? (b) What angle does the leash make with the vertical?A 15-kg sled is pulled across a horizontal, snow-covered surface by a force appiled to a rope at 30 degrees with the horizontal. The coefficient of kinetic friction between the sled and the snow is 0.20. (a) If the force Is 33 N, what is the horizontal acceleration of the sled? (b) What must the force be in order to pull the sled at constant velocity?How would (a) an updraft affect a skydiver in reaching terminal velocity? (b) a downdraft?
- M Alt Alt LATITUDE E6430 Name: Directions: All problems must be solved using the problem-solving method, givens, unknowns, equation, cubstitution, and solve with correct unit to receive full credit. Also, all force problems require an FBD. P.4D-Practice-Force of Friction 1. A 38 kg crate rests on a floor. A horizontal pulling force of just more than 170 N is needed to start thecrate moving. What is the coefficient of static friction between the crate and the floor?a boy at the school is pulling his 20kg stroller bag at a constant speed by holding the strap at an angle above the horizontal. he is pulling the handle with a 35 N force and the friction force on the stroller bag is 20 N. 1. draw a FBD 2. identify the angle that is made with the horizontal 3. wat is the magnitude of the normal force the ground produces on the stroller bag?A supermarket pushcart is being pushed at 45 degrees with respect to the horizontal from the starting point to the cashier, which is 25 feet away. The cart is 5kg, it contains 2 boxes of 10-1b flour and seven packs of half-kilogram sugar. The coefficient of friction between the wheels and the floor is 0.03. a. What force is required? b. How much force is required?
- 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 2020-202A 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.8. A block is at rest on a rough inclined plane and is connected to an object with the same mass as shown. The rope may be considered massless; and the pulley may be considered frictionless. The coeffi- cient of static friction between the block and the plane is us; and the coefficient of kinetic friction is k 0 A. g D. g - Hk sin(0) m a. What is the magnitude of the static frictional force acting on the block? B.m g [1 - sin(0)] C. mg D. mg cos(0) B. g - Hk cos(0) A. m g sin(0) E. mg [1 - cos(0)] b. If the rope were cut between the block and the pulley, what would be the magnitude of the acceleration of the block down the plane? C. g [sin(0) - μ cos(0)] sin(0)] c. If the mass of the suspended object is doubled, what will be the acceleration of the block up the plane? B. g [2 tan(0) - uk sin(0)] D. 2g [μ sin(0) - cos(0)] m E. g [tan (0) A. g [2 - μk sin(0)] C. g [2 cos(0) - μ sin(0)] E. g [2 sin(0) Hk Cos (0)]. -
- M Assume no friction M Hanging mass is 8 kg. Mass on table is 9 kg. What is the tension in the string connecting them? Answer to 2 sig figs.Lift on an airplane is F = (P2-P1) A. The total wing area of a certain airplane is 20 square meter. Air, of density 1.2 kg/m3 , is streaming past the upper wing at 50 m/s and the lower wing at 10 m/s. What is the lift on this airplane? %3D of O a 800 N O b. 9,600N Oc 480 N Od. 16,000 NA 29 kg child goes down a straight slide inclined 38° above horizontal. The child is acted on by his weight, the normal force from the slide, and kinetic friction. Part A Choose the correct free-body diagram of the child. fk 38° fk W 38° n n 38° W 38°