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- An object of mass m has these three forces acting on it . F1, F2, and F3 are shown in the figure. Assume the x-direction is to the right, and the y-direction is straight upwards. Let F1 = 7 N, F2 = 9 N, and F3 = 2 N. What is the direction of the net force, expressed as the angle θ, in degrees, that the net force vector makes with respect to the +x-axis? Enter an angle between −180∘ and +180∘.arrow_forwardThe two tug boats pull the oil rig to travel in the direction shown in calm water. (See left directed arrow). Tug A pulls with a force of 30 kN directed at the angle alpha of 47 deg and Tug B pulls at the angle beta of 36 deg. Determine the pull force of Tug B so the oil rig travels in the direction of the x axis. Determine the force of Tug B in kN. The oil rig is subjected to the towing forces described in P5 and travels in the direction shown at a constant velocity of 0.9 km/hr when tugs. Determine the 'drag' force exerted by the water on the oil rig in kN.")arrow_forwardAnswer the following questions: 1. A 16-pound weight moves in a horizontal straight line under the joint action of a constant force of 8 pounds in the direction of motion, and a resisting force whose magnitude in pounds is equal to twice the velocity and in feet per second. If the body starts from rest, find its velocity and the distance traveled after 1/4 second.2. A body falls from rest against a resistance that is proportional to the square root of the speed at any instant. If the terminal speed is 64 feet per second, how long will it take to attain a speed of 49 feet per second?arrow_forward
- An object of mass m has these three forces acting on it (there is no normal force, "no surface"). F1 = 1 N, F2 = 10 N, and F3 = 4 N. When answering the questions below, assume the x-direction is to the right, and the y-direction is straight upwards. What is the magnitude of the net force, in newtons? What is the angle θ, in degrees, of the net force, measured from the +x-axis? Enter an angle between -180° and 180°. What is the magnitude, |a| of the acceleration, in meters per square second, if the block has a mass of 8.9 kg?arrow_forwardA 1,040-N crate is being pushed across a level floor at a constant speed by a force F of 390 N at an angle of 20.0° below the horizontal, as shown in the figure a below. Two figures show a side view of a crate positioned upon a horizontal surface. Figure (a): An arrow pointing downward and to the right is labeled vector F and forms an angle of 20° below the horizontal as it approaches the upper left edge of the crate. Figure (b): An arrow pointing upward and to the right is labeled vector F and forms an angle of 20° above the horizontal as it extends from the upper right edge of the crate. (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.)(b) If the 390-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a).arrow_forwardA 781 N sprinter can push his feet back against the starting blocks with a force of 1852 N in the horizontal direction. If the force is generated for 0.28 s, determine the horizontal velocity of the runner out of the blocks. Include magnitude and direction when reporting vectors.arrow_forward
- Billie Budten and Mia Neezhirt are having an intense argument at the lunch table. They are adding two force vectors together to determine the resultant force. The magnitude of the two forces are 3 N and 4 N. Billie is arguing that the sum of the two forces is 7 N. Mia argues that the two forces add together to equal 5 N. Who is right? Explain.arrow_forwardIn the figure below, a box of Cheerios (mass mc = 1.5 kg) and a box of Wheaties (mass mw = 2.7 kg) are accelerated across a horizontal surface by a horizontal force F applied to the Cheerios box. The magnitude of the frictional force on the Cheerios box is 2.0 N, and the magnitude of the frictional force on the Wheaties box is 4.1 N. If the magnitude of F is 12 N, what is the magnitude of the force on the Wheaties box from the Cheerios box? |---Select--- mc Mwarrow_forwardMark and Paul were pushing a 2000 kg car and it reached a speed of 3.0 m/s after starting from rest. It covered a distance of 10 meter; What is the amount of force (Newton) exerted by John and Peter if the coefficient of kinetic friction is 0.100 ?arrow_forward
- A van exerts a force on trailers of different masses m. Compared with the force exerted on each trailer, rank the magnitudes of the forces each trailer exerts on the van. (Or are all pairs of forces equal in magnitude?)arrow_forwardProblem 5: An object of mass m has these three forces acting on it (there is no normal force, "no surface"). F = 3 N, F2 = 10 N, and F3 = 5 N. When answering the questions below, assume the x-direction is to the right, and they-direction is straight upwards. F, F What is the net force in component form, in terms of F1, F2, F3, and the unit vectors i and j F = 7 8 HOME a F| i j 4 5 y d. F1 1 | 2 3 F2 F3 +| - END h P vol BACKSPACE DEL CLEAR Submit Hint Feedback I give up! What is the magnitude of the net force, in newtons? What is the angle e, in degrees, of the net force, measured from the +x-axis? Enter an angle between -180° and 180°. What is the magnitude, Ja of the acceleration, in meters per square second, if the block has a mass of 8.9 kg?arrow_forwardA group of students carry out an experiment in which they want to find the coefficient of kinetic fricction between a box and table. For this, a wooden box is used that has a mass of 300 grams and additional masses that are placed on top. The box is pulled and the force at which it moves at constant speed is measured. The students made the following table in which the values of the masses that were placed on top of the 300 gram box appear and the force applied on the box also appears. a) Using the values in the table, make a graph in excel and determine the value of the coefficient of kinetic friction.arrow_forward
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