Mass Aptitude Test
To be safe, the ladder should be pitched one-third of its operating height away from the building. What distance away from the structure should the ladder be pitched if the building is 30 meters tall and the working height is 21 meters?
Which of the two situations calls for a greater effort to lift the weight off the ground?
Only when the weight is evenly distributed across several rope sections, as it is in Situation A, does a pulley lessen the amount of force needed to raise an object.
The two objects A and B are immersed in separate water-filled tanks. Which tank will have the highest water level?
Object B. Because object B is bigger than object A, it will move more water, resulting in a greater water level in the right tank than the left tank.
Given the same rotational speed, which of the two wheels will allow you to drive farther?
The big wheel goes further with each complete rotation since it is bigger.
Which of the two containers will allow water to cool more slowly after reaching the same temperature after boiling it?
Container B. Because less of the water's surface is exposed to the air, the water in container B will cool more slowly.
Which of the shelves can carry the heaviest load?
Green shelf. Because big weights can create bending effect, the green shelf has the most support that can hold the heaviest load, but the blue shelf lacks support for it.
Which of the pendulums will swing the fastest?
Pendulum D. The closer the pendulum is to the bar, the faster it will swing.