 # Civil Engineering Objective Questions { Applied Mechanics }

218. A projectile is fired with a velocity of 100.3 in/sec. at an elevation of 60?. The velocity attained by the projectile when it is moving at a height of 100 m, is

219. One end of a light string 4 m in length is fixed to a point on a smooth wall and the other end fastened to a point on the surface of a smooth sphere of diameter 2.25 m and of weight 100 kg. The tension in the string is

220. One end of a light string 4 m in length is fixed to a point on a smooth wall and the other end fastened to a point on the surface of a smooth sphere of diameter 2.25 m and of weight 100 kg.The reaction between the sphere and the wall of the arrangement made, is

221. On a mass m describing a circular path of radius r, the centrifugal force

222. A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5 rad/sec. The tension in the string is,

223. In a simple screw jack, the pitch of the screw is 9 nun and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

224. A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was

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