You want to nail a 2.5-kg  board onto the wall of a barn. To position the board before nailing, you push it against the wall with a horizontal force F→ to keep it from sliding to the ground. If the coefficient of static friction between the board and the wall is 0.79, what is the least force you can apply and still hold the board in place?

Q: A woman holds a book by placing it between her hands such that she presses at right angles to the…

A: The Static friction is given by the formula with respect to the force is given as, Fs≤μsFN The…

Q: A 50.7 kg box is resting on a horizontal floor. A force of 317.1 N directed at an angle of 34.1°…

A: Given;-  The mass of the box is m = 50.7 kg  A force of 317.1 N directed at an angle of 34.1° below…

Q: A worker with mass m = 70 kg is trying to stretch his muscles with the help of a vertical wall.…

A: Given,  Mass, m = 70 Kg Force exerted by each hand on the wall is F = 70 N Total force exerted on…

Q: A student of physics is carrying a heavy wooden crate. Being educated about friction, this student…

A: Draw the free-body diagram of the crate.

Q: A crate is placed on an inclined board. One end of the board is hinged so that the angle is…

A:

Q: A ladder of length L and mass m leans against the side of a house, making an angle of θ� with the…

A:

Q: A uniform spool is suspended from a vertical wall by a string attached to the spool’s thin axle. The…

A: Given data The Tension in the string is given as T = 2.6 N.   The free-body diagram is drawn as,

Q: A sandwich board advertising sign is constructed as shown. The sign’s mass is 8.00 kg. Even though…

A:

Q: The Johnsons just received a heavy package (perhaps a treadmill) in the mail that they ordered from…

A:

Q: A box is hanging at rest from the ceiling by two ropes. The rope on the left (Rope 1) forms a…

A: Recall  For the equilibrium of the box∑Fx=0∑Fy=0

Q: A rectangular block twice as high as it is wide is resting on a board. The coefficient of static…

A:

Q: A 3 kg box rests on a horizontal table. It is attached to a 2 kg box via a pulley. The 2 kg box…

A:

Q: You are pressing a 3.0 kg cubic wooden block into a corner between a wall and the floor. Your arms…

A: We are given a block being pressed to corner. We are given the angle of pressing. We first draw free…

Q: Mass mB = 25 kg is on a horizontal surface connected by a rope over a pulley to mass mA = 15 kg.…

A: mB = 25 kg  mA = 15 kg N is the normal force and fs is the static friction.

Q: A block with a mass of m = 1.5 kg rests on a wooden plank. The coefficient of static friction…

A: Gravitational force is acting straight downwards, normal force is acting perpendicular to the…

Q: You decide to spend you spring break to learn how to stand on a tightrope, without falling off. When…

A: Approximately W/2

Q: A 3.0-mm -long ladder, leans against a frictionless wall. The coefficient of static friction between…

A: Let us consider an equilibrium of horizontal forces ΣFx=0FL2cosθ-μFLsinθ=0 If the ladder does not…

Q: You are working in an ice skating rink and have been asked to hang a new banner on the wall. Your…

A:

Q: 5 m 4m |0. 6m 1m 100kg 6 m

A:

Q: A woman who weighs 533 N is leaning against a smooth vertical wall, as the drawing shows. Find (a)…

A:

Q: The two blocks (m = 13 kg and M = 90 kg) in the figure are not attached to each other. The…

A: Mass of block, m =13 kg Mass of block, M = 90 kg The coefficient of static friction μs=0.44

Q: The Johnsons just received a heavy package (perhaps a treadmill) in the mail that they ordered from…

A:

Q: A box is placed at one end of a 2.00-m plank. That end of the plank is slowly raised until the box…

A:

Q: A 12-kg, 1.0-m-long uniform beam is attached to a wall by a cable. The beam is free to pivot at the…

A:

Q: A ladder leans against a wall 5 meters above the ground so a homeowner can clear his gutters of…

A: Given: The height at which the ladder is leaned, h = 5 m Distance of foot of ladder from the wall, d…

Q: A 240-kg uniform steel beam 7.75 m in length rests against a frictionless vertical wall, making an…

A: Given: Mass of the beam m = 240 kg length if steel beam L = 7.75 m inclination angle θ = 60.0° mass…

Q: One block rests upon a horizontal surface. A second identical block rests upon the first one. The…

A:

Q: Two vertical walls are separated by a distance of 1.50 m, as the figure shows. Wall 1 is smooth,…

A:

Q: A small box of mass m1 is sitting on a board of mass m2 and length L. The coefficient of kinetic…

A: Mass of box  Mass of board Length of board LCoefficient of kinetic friction μkCoefficient of static…

Q: Į h 0 0

A: Given, θ=45° Mass, m=8kg Each wire distance, d=0.35m Height, h=0.86m Fa=490N The expression of the…

Q: of 21 kgkg. Ray (70 kgkg) stands 1.0 mm from the left cable. Determine the magnitude of the force…

A:

Q: A patient with a broken tibia has the lower half of his leg suspended horizontally by a cable…

A: Tension is the force transmitted axially by a string, a cable, a chain, or similar object, or by…

Q: You are holding a bulletin board weighing 6.0 N in place against a wall while your friend secures it…

A:

Q: A cubical box is filled with sand and weighs 890 N. We wish to “roll" the box by pushing…

A: Given : W = 890 N

Q: A block is placed on a wooden plank, which is initially horizontal. One end of the plank is slowly…

A:

Q: A pulley is attached to one end of a rough plank, which makes an angle of 34° with the horizontal. A…

A: Angle of inclination, θ=34° mass of the Box, mA mass of the bucket filled with water, mB=7.5 Kg…

Q: A box is placed at one end of a 2.00-m plank. That end of the plank is slowly raised until the box…

A: Solution: given that d = 2m μs=0.400 and μk=0.200

Q: A block is resting on a wooden plank. There is a hinge on one end of the plank which allows the…

A: The angle of repose if given by  where, is the coefficient of friction.

Q: A block is resting on a ramp as shown in the figure below. You can change the inclination angle θ by…

A:

Q: A 200 N sign hangs from the middle of a cable between two buildings. The ends of each cable are…

A: For the sign to be in equilibrium, the net force on the sign in vertical direction must be zero. The…

Q: You are working in an ice skating rink and have been asked to hang a new banner on the wall. Your…

A: For the ladder to not slip, it must remain in translational as well rotational equilibrium. The…

Q: A ladder leans against a wall 5 meters above the ground so a homeowner can clear his gutters of…

A: Solution:-

Q: You gave a friend an outrageously large birthday present of mass m=29.7 kg. They are excitedly…

A: If a rough surface have static coefficient of friction μs and a normal force N acting on a object by…

Q: A uniform board is leaning against a smooth vertical wall. The board is at an angle  above the…

A: Given  Coefficient of friction=0.890

Q: A book of mass 9 kg rests on a plank. You tilt one end of the plank and slowly increase the angle of…

A: Given data: -  The mass of the book is m = 9 kg. The coefficient of static friction between the…

Q: A small box of mass m1m1 is sitting on a board of mass m2m2 and length LL (Figure 1). The board…

A: A small box of mass m1 is sitting on a board of mass m2 and length L. The board rests on a…

Q: A 14.0 m uniform ladder weighing 480 N rests against a frictionless wall. The ladder makes a…

A:

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.