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A power square thread screw has a pitch diameter (dm) of 34mm, the lead of the screw 1 of 4mm, the frictional diameter of the collar (dc) of 40mm.
Its speed is 1730 rpm and its torque output to a mechanical load is 29.1 lb-ft*1.356=39.5Nm. What is the output HP and the efficiency?
The car, initially traveling at 12.6km/h, is accelerated up a straight road inclined at 12 degrees to the horizontal so that it covers a distance of 1.2km.
A total charge of 6.3*10^-8C is distributed uniformly throughout a 2.7cm radius sphere. The volume charge density is ___?
The motor has a bearing shaft diameter of 3.2 cm and the coefficient of friction of each bearing is 0.008. Find the torque of friction of the bearings.
A uniform, hollow, cylindrical spool has inside radius R/2, outside radius R and mass M .
A slender rod is pivoted at 0 which is a frictionless bearing. The circular frequency in rad/s at the rod for a small oscillation is?
A roller is rolled by pulling on a rope wrapped around an inner groove. If the roller rolls without slipping, the angular acceleration in rad/sec^2 .
The coil is rotated through a 30.0º angle about the axis shown, the left side coming out of the plane of the figure and the right side going into the plane.
A circular coil with area A and N turn is free to rotate about a diameter that coincides with the x-axis.
What is the least magnitude of the force f? that will succeed in raising the wheel onto the curb when the force is applied at the center of the wheel?
By means of a rope whose mass is negligible, two blocks are suspended over a pulley, as the drawing shows.
A school yard teeter-totter with a total length of 5.2 m and a mass of 36 kg is pivoted at its center. A 18 kg child sits on one end of the teeter totter.
A student on a piano stool rotates freely with an angular speed of 3.16 rev/s. The student holds a 1.50 kg mass in each outstretched arm, 0.794 m.
A rectangular wire loop with a cross-sectional area of 5,000 cm^2 carries a current of 0.50 amperes.
You are installing a new spark plug in your car, and the manual specifies that it be tightened to a torque that has a magnitude of 47 Nm.
In San Francisco a very simple technique is used to turn around a cable car when it reaches the end of its route.
A hoop, a solid cylinder, a spherical shell, and a solid sphere are placed at rest at the top of an incline. All the objects have the same radius.
When the first object reaches the bottom, what is the height above the ground of the other object? Answer in units of m.
What is the smallest possible value of x such that the bar remains stable (call it x_critical)? Express your answer for x_critical in terms of m_1, m_2, d.
Hat is the minimum coeffecient of static friction mu_min required between the ladder and the ground so that the ladder does not slip?
The disk, when twisted and released, oscillates with a period T of 1.00 s. Find the torsional constant k of the fiber.
A slender, uniform metal rod of mass M and length l is pivoted without friction about an axis through its midpoint and perpendicular to the rod.
Express your answer in terms of quantities given in the problem introduction and the magnitude of the acceleration due to gravity g.
A horizontal boom 8 ft long is attached to a wall at its inner end and is supported at its outer end by a cable that makes an angle 30° with the boom.