Applied Mechanics and Graphic Statics

291. The tension in a cable supporting a lift

1. Is more when the lift is moving downwards
2. Is less when the lift is moving upwards
3. Remains constant whether its moves downwards or upwards
4. Is less when the lift is moving downwards

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292. The time period of a simple pendulum depends on
(i) Mass of suspended particle
(ii) Length of the pendulum
(iii) Acceleration due to gravity
The correct answer is

1. Only (i)
2. Both (ii) and (iii)
3. Both (i) and (iii)
4. All are correct

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293. The torque produced by a force depends on
(i) The magnitude of the force
(ii) The direction of the force
(iii) The point of application of the force relative to origin
The correct answer is

1. Only (i)
2. Both (i) and (ii)
3. Both (i) and (iii)
4. All (i), (ii) and (iii)

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294. The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is

1. 64 J
2. 400 J
3. 464 J
4. 89 J

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295. The total time of collision and restitution of two bodies, is called

1. Time of collision
2. Period of collision
3. Period of impact
4. All the above

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296. The unit of force in C.G.S. system of units, is called

1. Dyne
2. Newton
3. Kg
4. All the above

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297. The unit of impulse, is

1. kg.m/sec
2. kg.m/sec
3. kg.m/sec2
4. kg.m/sec

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298. The unit of Moment of Inertia of a body, is

1. m
2. m²
3. m³
4. m⁴

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299. The unit of moments in M.K.S system, is

1. kg.m
2. kg/m²
3. kg/sec²
4. kg/sec

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300. The unit of rotational inertia of a body in C.G.S system is

1. cm⁴
2. kg.cm²
3. gm.cm²
4. gm.cm³

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