Applied Mechanics and Graphic Statics

31. A funicular polygon cannot be made to pass through

1. One specified point
2. Two specified points
3. Three specified points
4. More than three specified points

View answer

32. A geo-stationary satellite is one which orbits the earth with a velocity of rotation of

1. Moon
2. Earth
3. Sun
4. Pole

View answer

33. A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is

1. 0.25
2. 0.33
3. 0.4
4. 0.5

View answer

34. A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if

1. Floor is smooth and the wall is rough
2. Floor is rough and the wall is smooth
3. Floor and wall both are smooth surfaces
4. Floor and wall both are rough surfaces

View answer

35. A heavy ladder resting on floor and against a vertical wall may not be in equilibrium if

1. Floor is smooth and wall is rough
2. Floor is rough and wall is smooth
3. Both floor and wall are rough
4. Both floor and wall are smooth

View answer

36. A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is

1. 2 J
2. 4 J
3. 6 J
4. 8 J

View answer

37. A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is

1. 43556
2. 43525
3. 3
4. 4

View answer

38. A light rope is loaded with many equal weights at equal horizontal intervals. The points of suspension on the rope lie on a

1. Parabola
2. Catenary
3. Cycloid
4. Ellipse

View answer

39. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is

1. 0.5
2. 0.4
3. 0.55
4. 0.3

View answer

40. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

1. 15
2. 18
3. 20
4. 26

View answer