A shopper pushes a grocery cart by exerting a force on the handle at a downward angle of 32.0 degrees below the horizontal. The cart has a mass of 26.5 kg, and the force of friction is 58.0 N. What force must the shopper exert to move at a constant velocity? (Define the positive horizontal direction to be the direction that the shopper pushes the cart.). Draw the free body diagram and solve the problem (Non-anonymous questionO)
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- A block of mass m1 = 38.4 kg on a horizontal surface is connected to a mass m2 = 15.2 kg that hangs vertically as shown in the figure below. The two blocks are connected by a string of negligible mass passing over a frictionless pulley. Assume that the horizontal surface is smooth. a) What is the acceleration (in m/s2) of the hanging mass? (Enter the magnitude only.) b) Determine the tension (in N) in the cord. (Enter the magnitude only.)Block 1 (5 kg) is pulled by a rope from left to right up a ramp which is inclined 20 degrees from the horizontal. The rope pulls on block 1 with a force of 105 N parallel to the surface of the inclined plane. The coefficient of kinetic friction between the block and the surface equals 0.8. On a sheet of paper, draw the free body diagram for block 1 using the two-subscript notation from class. Assume that the x-axis is parallel to the incline and positive in the direction up the incline. After completing the free body diagram, enter below each force and its x & y-Components. FORCES on BLOCK 1 Weight force on block 1 by Earth W1E = jN Tension force on block 1 by Rope T1R = i + jN Normal force on block 1 by Surface N1S = i + jN Frictional force on block 1 by Surface f1S = i + jN Submit Answer Tries 0/2 What is the acceleration a of block 1? i + j m/s² a 3=Physics student Matt has just learned about Newton's 3rd law of motion. He's considering a car pulling a trailer as shown below. He thinks that since the tension force forward on the trailer is equal and opposite to the tension force backwards on the car, the net force on the car must be zero and therefore the car can't accelerate. Which one (or more) of the following statements is correct: The tension force forward on the trailer is not the same magnitude as the tension force backwards on the car. Matt has not considered all the forces acting on the car, such as the friction between the wheels and the ground, in order to calculate the net force on the car. Correct! The net force is the sum of all forces acting on an object so you must include all forces to then apply Fnet = ma. O The net force on the car is always zero and therefore the car cannot accelerate. Since the 2 tension forces act on different objects you can't add them together to get a "net force" on either object.
- A 3.50 kg block is pushed along a horizontal floor by a force of magnitude 15.0 N at an angle 0 = 30.0° with the horizontal (see the figure below). The coefficient of kinetic friction between the block and the floor is 0.250. Calculate the magnitudes of (a) the frictional force on the block from the floor and (b) the block's acceleration. Step 1 Create the free-body diagram. Use the checkboxes to select the correct vectors as instructed above. Move the vectors to the correct starting points and orient them in the correct direction as instructed. Key to Force Labels mg = Gravitational force fs = Static friction FN = Normal force T = Tension fk = Kinetic friction F = Pushing force mg fk fs F FN Draw free-body diagram here Point the acceleration vector in the correct directionCart 1 has a mass of 20.0 kg, cart 2 has a mass of 10.0 kg, and Cart 3 has a mass of 15.0 kg. Coefficient of Kinetic friction is 0.10. A third cord, which pulls on cart 1 and is at an angle of 23° above the horizontal, has a tension of magnitude 150 N.(hint: FN of cart 1 is NOT equal with Fg). Draw FBD for each cart. a) Determine the magnitude of the acceleration of the carts. b) Determine the magnitude of the tension (T2) in the cord between m3 and m2. c) Determine the magnitude of the tension (T1) in the cord between m2 and m1An Atwood machine consists of two masses hanging from the ends of a rope that passes over a pulley. Assume that the rope and pulley are massless and that there is no friction in the pulley. If the masses have the values ?1=19.5 kg and ?2=12.5 kg, find the magnitude of their acceleration ? and the tension ? in the rope. Use ?=9.81 m/s2.
- A mover is pushing horizontally on a very large box with a force of 850 N, but he can’t get it to move. Draw a free body diagram for the box. Draw a free body diagram for the box and the mover. With how much force is the box pushing back on the mover?Two blocks connected by a light horizontal rope sit at rest on a horizontal, frictionless surface. Block A has a mass of 18 kg and Block B has mass m. A constant horizontal force F= 75 N is applied to Block A. In the first 3.0 seconds after the force is applied, block A moves 15 m to the right.1. Write Newton's second law for block A along the horizontal direction and solve for the force exerted by the rope on block A.2. Write Newton's second law for block B along the horizontal direction and solve for itss unknown mass m. ( F rope on A = F rope on B)Hi, I need help with part d of this question. Thanks.
- Questions #4 and #5. Thank you in advance!Draw a motion diagram, a force identification diagram, and a freebodydiagram. For the situation described. An elevator, suspended by a single cable, has just left the tenth floor and is speeding up as it descends toward the ground floor.A person throws a 2.50 lb stone into the air with an initial upward speed of 15.0 ft/s . Part B Make a free-body diagram of the forces for this stone at its highest point.(Draw the force vectors with their tails at the origin of the coordinate system.) Part C Make a free-body diagram of the forces for this stone when it is traveling downward. (Draw the force vectors with their tails at the dot.)