In about 1915, Henry Sincosky of Philadelphia suspended himself from a rafter by gripping the rafter with the thumb of each hand on one side and the fingers on the opposite side. Sincosky’s mass was 79 kg. If the coefficient of static friction between hand and rafter was 0.70, what was the least magnitude of the normal force on the rafter from each thumb or opposite fingers? (After suspending himself, Sincosky chinned himself on the rafter and then moved hand-over-hand along the rafter. If you do not think Sincosky’s grip was remarkable, try to repeat his stunt.)

Q: A 5 kg box rests on a tabletop. On one side, it compresses a spring with a stiffness of 1000 N/m by…

A: mass of box (m) = 5 kg spring constant (k) = 1000 N/m compression (d) = 1 cm = 0.01 cm

Q: An initially stationary box of sand is to be pulled across a floor by means of a cable in which the…

A: Given : T = 1020 N μs = 0.360

Q: The force P is applied to the 57-kg block when it is at rest. Determine the magnitude and direction…

A:

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A:

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A:

Q: A 2.20 kg block is initially at rest on a horizontal surface. A horizontal force of magnitude 4.22 N…

A: Given:-  The mass of the block is m = 2.20 kg  The block is initially on the rest.  The applied…

Q: In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at…

A:

Q: A rug (mass of 20.0 kg) is sitting on a slope with an angle of 20 degrees. A person (mass of 40.0…

A:

Q: You are holding a book of mass 10.7 kg that is initially at rest against a vertical wall by exerting…

A: Given,Mass, m = 10.7 kgFYb = 100.8 Nμs = 0.46μk =0.36

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 university physics who is transporting a heavy wooden box is becoming cognizant of…

A: Step 1: Let us draw a free body diagram of the situation  Step 2: Using Newton's second law along…

Q: A teenager of mass m1=50.6kgm1=50.6kg pushes backward against the ground with his foot as he rides…

A:

Q: In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at…

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 block of mass m - 5.00 kg is put on top of a block of mass m, -5.00 kg. To cause the top block to…

A:

Q: In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at…

A:

Q: A block weighing 60 N is resting on a flat surface where the coefficient of static friction is 0.55,…

A:

Q: A block of mass m, = 4.00 kg is put on top of a block of mass m, = 5.00 kg. To cause the top block…

A: Here we have to use some basic concept.

Q: Two blocks A and B are connected by a horizontal bar whose mass is negligible. The mass of block A…

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Q: A person stands on the ball of one foot. The normal force due to the ground pushing up on the ball…

A: Given Data:-  The Normal force due to the ground pushing up on the ball of the foot N = 750 N  The…

Q: Find (a) the magnitude of the force

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Q: An 8 kg block rests on a horizontal surface whose coefficients of friction are: s = 0.4 and k =…

A:

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A:

Q: In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at…

A: Solution:-Given thatFA=206 NFC=179 N

Q: a large box of mass 11.4 kg sits on a ramp that makes an angle of 30.1 degrees with the horizontal.…

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Q: A block of mass m1 = 3.9 kg is placed on top of a block with mass m2 = 5.4 kg. A force, F = is…

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Q: Force T pulls at angle a up from the horizontal on a section of pipe of weight W as shown, but the…

A: Draw the free body diagram.

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 snowboarder and his board with a combined mass of 50.0 kg moving at 9.50 m/s are about to go up an…

A:

Q: A block of mass m; = 4.00 kg is put on top of a block of mass m, = 7.00 kg. To cause the top block…

A:

Q: A 16 kg block of steel is at rest on a horizontal table. The coefficient of static friction between…

A:

Q: The force P is applied to the 58-kg block when it is at rest. Determine the magnitude and direction…

A: As per our company guidelines we are supposed to answer only first 3-sub part. Kindly repost other…

Q: A box filled with appliances rests on a floor. Only gravity and the support force of the floor act…

A: Because there is no relative motion between the box and the floor, the friction force is called…

Q: In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at…

A:

Q: An object hangs between two walls which are 1.8 m apart. If the rope sags 15° below horizontal and…

A: As the mass hanging in middle of the rope so the tension on both sides of tention be equal now to…

Q: A block of mass m; = 4.0 kg is put on top of a block of mass mp = 7.0 kg. To cause the top block to…

A: Since 19 N force must be applied to slip top block so frictional force between the two blocks must…

Q: A

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Q: The figure shows a section of a cable-car system. The maximum permissible mass of each car with…

A:

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: