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The angular motion of the forearm of a human hand carrying a mass is shown in Fig. 2.102. During motion, the forearm can be considered to rotate about the joint (pivot point) O with muscle forces modeled in the form of a force by triceps (c1) and a force in biceps (c2θ) where c1 and c2 are constants and is the velocity with which triceps are stretched (or contracted). Approximating the forearm as a uniform bar of mass m and length l, derive the equation of motion of the forearm for small angular displacements Also find the natural frequency of the forearm.
a how would you define a system to determine the temperature rise created in a lake when a portion of its water is used
air flows through a well-insulated nozzle operating at steady state. at the inlet the pressure is 5 bar the temperature
you borrow 10000 from a bank at annual rate of 10 compounded monthly which needs to be repaid in 36 equal monthly
A two capacity process tank is to be analyzed using proportional and integral controllers. A process could be a steam jacketed kettle as shown in Figure.1.Water is heated continuously by the steam flow and it is proposed to use a controller to regula..
A small exhaust fan, rotating at 1500 rpm, is mounted on a 0.2-in. steel shaft. The rotor of the fan weighs 30 lb and has an eccentricity of 0.01 in. from the axis of rotation.
a body is acted upon by an upward force of 12n and a horizontal force of 20n to the right. what are the amount and the
a steam turbine has an inlet pressure of 1200 kpa and temperature of 400 degc. the steam exits the turbine at a
The air temperatures are equal. If the drag force on the model was 250 N. Determine the drag on the prototype
water at 70degf is being drained from an open tank through a 24-in diameter 130-ft long new cast iron pipe. find the
A rotor is being designed for a wind turbine. The rotor will have a diameter of D = 70 m. A single airfoil will be used for the length of the blades. The airfoil has its minimum drag to lift ratio when the lift coefficient is 1.0. Two options are bei..
A rocket is launched horizontally (x direction) at an initial velocity of 100 m/s and travels along a parabolic path given by y 2 = (100x) km. If the x component of acceleration is ax = (2t + 15) m/s2 , where t is in seconds, determine magnitude and ..
air is considered as an ideal gas. dont use gas table for gas properties just assume that both cv and cp are constants.
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