Problem of friction

Here is the asking problem: A cord is attached to and partially wound around a cylinder of weight W and radius r which rests on an incline as shown. Knowing that the coefficient of static friction between the cylinder and the incline is 0.30, find the smallest allowable value of «teta» if the cylinder is to remain in equilibr ...continues

Friction problem

A half section of pipe (see Figure attached), weighting 100 Kg, is to be moved to the right along the floor without tipping. Knowing that the coefficient of friction between the pipe and the floor is 0.35, determine the largest allowable value of angle between direction of T and horizon.

Using Archimedes' principle and equilibrium of two submerged objects to find unknown density.

We wish to find he density of an irregularly shaped plastic object found floating in the sea. Its mass is Mp= 1.25 kg. It is tied by a cord to a block of aluminum, mass Ma= 1.5 kg, whose density is Da= 2700 kg/m^3. The two masses are submerged in sea water, density Dliq=1025 kg/m^3, and held stationary by a cord exerting upward ...continues

Bernoulli's equation and equation of continuity in liquid flow from large to smaller pipe

Bernoulli problem. A sprinkler supply pipe pumps water upward from a larger pipe, diameter d2=.28 m, to a smaller pipe, diameter d1= .12 m. The velocity of the water through the smaller pipe is v1= 6 m/sec. See attachment #1 for diagram. a. find the water velocity in the larger pipe. b. find the rate of flow in kilograms per ...continues

Archimedes' principle applied to a floating block in turpentine gives density of liquid. The same block, held stationary submerged by a metal block.

A block whose mass is Mb= 5.22 kg and density Db= 870 kg/m^3 floats in turpentine whose density is Dt with .004 m^3 of the block submerged. PART a. find the density of the turpentine. PART b. Find the minimum mass of an aluminum block which will, when tied to the unknown block, hold both blocks submerged and statiionary.

Torque exerted by the sea on a submerged submarine's three escape hatches with different orientation.

Three emergency escape hatches are on a submarine submerged in sea water whose density is D=1025 kg/m^3. Each hatch is rectangular, having width W= .85 m, length L= 1.2 m with its hinge of length W along one side. SEE ATTACHMENT #1 for orientation for PARTS a, b, and c. PART a. The Deck Hatch is in a horizontal plane at dept ...continues

Problem of friction

Can you help me for solving this problem below. Because I don't know how can I deal with this kind of problem of friction when there are a car. So, explain me how can I solve this problem step by step with a free body diagram ( for understanding your resolution)showing the forces working over the car and its wheels. Here is t ...continues

Bernoulli's equation determines ejection velocity of liquid from a tank. Motion equations find x,y coordinates of impact of the liquid.

A large tank contains non-viscous liquid whose depth is H. A bullet punches a small hole of radius r in the vertical side of the tank at a point which is distance h below the liquid surface. SEE ATTACHMENT #1 for a diagram showing parameters and Bernoulli's equation. PART a. Apply Bernoulli's equation to determine distance ...continues

A truck is to be driven upward on a plane. Find the maximum plane angles P for front wheel drive, Q for rear wheel drive, and S for all wheel drive.

A truck whose weight is W, has a wheelbase (distance between front and back wheels) B= 3.2 meters. On level ground the front wheels carry 65% of its weight. The center of gravity (c.g.) of the truck is distance d= .85 m above the ground and unknown horizontal distance x, behind the front wheels' contact with the ground. The coef ...continues

Express the angular momentum of a marble moving first past an axis then around an axis.

Definition 1: The linear momentum, vector p, of an object is its mass, m, times its velocity, vector v. Definition 2: The angular momentum, vector L, of an object about an axis, is defined as the cross product of the position, vector R, relative to the axis, and its linear momentum, vector p. Definition 3: The magnitude of the ...continues