1) A 0.30-kg ball is attached at the end of a 0.90-m-long stick. The ball and stick rotatein a horizontal circle. Because of air resistance, a continual push must be exerted onthe stick to keep the ball moving at a constant speed, causing a 0.036-Nm torque.Draw an extended force diagram showing the forces exerted on the ball and stickand use it to determine the magnitude of the resistive force that the air exerts on theball opposite its motion. What assumptions did you make?Ability A14: Is able to construct an extended force diagramNeeds WorkInadequateFD contains no errors invectors or vector placementbut lacks a key feature suchas labels of forces with twosubscripts or the location ofthe intended axis ofrotation.FD is constructed butcontains major errors suchas incorrect or mislabeledforce vectors, forces exertedfrom incorrect locations, ordoes not identify the axis ofrotation.Ability D7: Is able to choose a productive mathematical procedure for solving the problemInadequateNeeds WorkCorrect and completemathematical procedure isdescribed but an error ismade in the calculations. Allunits are consistent.AdequateThe diagram contains noerrors and each force islabeled so that it is clearlyunderstood what each forcerepresents and where theaxis of rotation is.AdequateMathematical procedure isfully consistent with thedesign. All quantities arecalculated correctly withproper units. Final answer ismeaningful.A mathematical procedure isdescribed, but is incorrector incomplete, due to whichthe final answer cannot becalculated. Or units areinconsistent.MissingNo representation isconstructed.MissingMathematical procedure iseither missing, or theequations written down areirrelevant to the design.

Given: The mass of the ball: →m=0.30 Kg Length of the stick: →L=0.90 m Torque applied for the…

1) A 0.30-kg ball is attached at the end of a 0.90-m-long stick. The ball and stick rotate in a horizontal circle. Because of air resistance, a continual push must be exerted on the stick to keep the ball moving at a constant speed, causing a 0.036-Nm torque. Draw an extended force diagram showing the forces exerted on the ball and stick and use it to determine the magnitude of the resistive force that the air exerts on the ball opposite its motion. What assumptions did you make?

1) A 0.30-kg ball is attached at the end of a 0.90-m-long stick. The ball and stick rotate in a horizontal circle. Because of air resistance, a continual push must be exerted on the stick to keep the ball moving at a constant speed, causing a 0.036-Nm torque. Draw an extended force diagram showing the forces exerted on the ball and stick and use it to determine the magnitude of the resistive force that the air exerts on the ball opposite its motion. What assumptions did you make?

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.59P: How many turns of rope around the capstan are needed for the 40-lb force to resist the 8000-lb pull...

See similar textbooks

Similar questions

A hand exerts a force of 125 N on a scale at 30 cm from the joint center at the elbow. If the triceps attaches to the ulna at a 90° angle and at a distance of 3.5 cm from the elbow joint center, and if the weight of the forearm and hand is 45 N with the hand/ forearm CG located 15 cm from the elbow joint center, how much force is being exerted by the triceps?
A belt wrapped around a pulley 600 mm in diameter has a tension of 800 N on the tight side and a tension of 180 N on the slack side. What power in kW is being transmitted if the pulley is rotating 200 rpm? The correct answer is 3.89 kW
A force of 100 N is applied to the brake pedal which acts on the cylinder called the master through a lever. A force of 500 N is exerted on the master cylinder. Pressure created in the master cylinder is transmitted to four so-called slave cylinders The master cylinder has a diameter of 0.500 cm and each slave cylinder has a diameter of 2.50 cm Calculate the force F2 created at each of the slave cylinders
7. The arrangement in the drawing shows a block (mass = 14.0 kg) that is held in position on a frictionless incline by a cord (length = 0.582 m). The mass per unit length of the cord is 1.30 x 10-2 kg/m, so the mass of the cord is negligible compared to the mass of the block. The cord is being vibrated at a frequency of 166 Hz (vibration source not shown in the drawing). What is the smallest angle 0 between 15.0° and 90.0° at which a standing wave exists on the cord?
The lever mechanism was used to lift the weight W. Using the principle of virtual work, calculate what the value of the force P must be in order to be able to lift the weight. The weight of the disc is negligible. The rod length is 21. W
If the cross-section areas of the smaller and larger pistons are 0.002 m2 and 0.2 m2 respectively and the input force applied on the smaller piston is 100 N, what is the output force applied on the larger piston?
A block sits on a plane, and there is friction between the block and the plane. The plane is accelerated to the right. If the block remains at the same position on the plane, which of the following pictures might show the free-body diagram for the block? (All of the vectors shown are forces.) N (zero force) Fi та та mg mg mg mg
If the maximum length of the spring is 40 cm, what average friction force opposes the motion of the mass?
The grey block D in the sketch has a mass of 100 kg. The blue wedges (B and C) have a mass of 10 kg. Between A and B: usAB=0.3 Between B and C: usBC=0.2 Between C and A: μsCA=0.3 Between C and D: μsCD=0.4 Between A and D: μsAD=0.5 Determine the minimum value of force P that must be exceeded to initiate movement in block D. A B B D
Calculate the work required to move a mass “m” against A Force Field F = 5Ux + 7Uy along the indicated direct path from Point A to Point B
A 6-m long ladder has a mass of 10 kg, and its center of gravity is 2.4 m from the bottom along the ladder. The ladder is resting on a 5° upward sloping floor at A and on a wall inclined to the right at 5° from the vertical at B, so that it makes an angle of 60° with the horizontal. How far up along the ladder can a 78-kg man climb before the ladder is on the verge of slipping? The angle of friction at all contact surfaces is 15°. Also determine the total reaction at A and B in Newton. Note: Point A is at the left of point B. SOLVE ASAP
The aluminum body of a lamp has a uniform thickness of 1mm.Since it is known that the density of aluminum is 2800 kg / m3, find the mass of the object in the figure. STATİCS