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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A 50 kg boy climbs up a 8 m rope in gymnasium in 10 sec. The average power developed by the boy is approximately

500 watts
400 watts
4000 watts
None of these

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Applied Mechanics and Graphic Statics
A body A of mass 6.6 kg which is lying on a horizontal platform 4.5 m from its edge is connected to the end of a light string whose other end is supporting a body of mass 3.2 kg as shown in below figure. If the friction between the platform and the body A is 1/3, the acceleration is

1.00 m/sec²
0.5 m/sec²
0.75 m/sec²
1.25 m/sec²

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Applied Mechanics and Graphic Statics
A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan”1 x, where x is

43954
43895
43926
43894

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Applied Mechanics and Graphic Statics
Maximum efficiency of a screw jack for the angle of friction θ, is

sin θ/(1 + sin θ)
(1 + sin θ)/(1 - sin θ)
(1 - sin θ)/(1 + sin θ)
(1 - sin θ)/sin θ

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Applied Mechanics and Graphic Statics
A stone is whirled in a vertical circle, the tension in the string, is maximum

When the string is horizontal
When the stone is at the highest position
When the stone is at the lowest position
At all the positions

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Applied Mechanics and Graphic Statics
The unit of Moment of Inertia of a body, is

m³
m
m²
m⁴

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