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1. Leather belting 75mm wide is to be used to transmit power between two parallel shafts which run at the same speed. The pulleys are 0.6 m diameter. At slow speeds the tension in the slack side is half the tension in the driving side and the angle of lap on the pulley is 180 degrees. If the maximum load on the belting is not to exceed 140 N/ cm of width, neglecting the effect of centrifugal force, estimate the maximum power which can be transmitted at 9.2 r/s.
2. Find the maximum torsional shear stress in a 75 mm diameter shaft transmitting 40 KW power at 1.33 r/s if the maximum twisting moment exceeds the minimum by 40 per cent. What is the greatest twist in degrees per metre length if G =87 GPa?
The now-discontinued Concorde flew at Mach 1.3, which meant the speed of the plane was 1.3 times the speed of sound in air. What is the angle among the direction of propagation of the shockwave and the direction of the plane's velocity?
Find the density of energy state and for what a/b ratio (of the rectmygulm lattice spacing) would the Fermi circle just touch the edge of the firer Brillouin zone?
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Global warming is a cause for concern because even small changes in the Earth's temperature can have significant consequences. For example, if the Earth's polar ice caps were to melt entirely, the resulting additional water in the oceans would flo..
question1a space vehicle is travelling at 4190 kmh relative to earth when the exhausted rocket motor is disengaged and
A rod of mass m and length x is supported on a knife edge at its midpoint. A ball of clay M is dropped from rest from a height y and makes a perfectly inelastic collion by the rod 0.9 m from the point of support. Discover the moment of inertia of the..
A spaceship is approaching a space station at a speed of 2.0 105 m/s. find the frequency of the beacon observed on the spaceship
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problem- building office room. length 10m width 8m height 4m. four pillars support four beam. the beams should have
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