0
Uniform plank 5m rests horizontally on 2 bricks that are 0.5m from each end A child weighing 200N stands on 1 end of the plank and causes the other end to lift Weight of plank?
Wiki User
∙ 14y ago
We have to assume that the question is saying that the 200-N is the minimum force required to cause the plank to just barely rotate. When the rotation begins, we have a simple lever on one brick, and we can forget about the second brick. The child is standing on the lever's short arm. The child's first moment is (200N x 0.5m), and the first moment of the short piece of plank is (0.1W x 0.25m). The sum of moments on the short side is (100 + 0.025W). On the long side, the moment is (0.9W x 2.25) = (2.025W) . The moments on both sides are equal ===> (100 + 0.025W) = (2.025W) 100 = 2W ===> W = 50N
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How big were the bricks that the pyramid of Giza were made of?
The pyramids are not made of bricks, they are made of hand cut limestone blocks some weighing many tons.
What is meant by aerocon bricks?
Aerocon bricks are light weight bricks, the bricks are casted leaving the pores in the brick, which reduces the unit weight of brick, which inturn reduces the weight coming on the structure.- K @ $ !civil engineering - GITAM UNIVERSITY
Could paper bricks support house under its own weight?
Bricks on a brick house only support the weight of the bricks. So, as long as the paper could support the weight of the paper, it could support it's own weight. Providing it did not get wet... and tripple in weight.
What is the weight of bricks?
3 cats
Which weighs more a dozen eggs or a dozen bricks?
a dozen bricks because bricks weight more than eggs..... if u have 12 eggs and 12 bricks in separate bags what bag would be heavier...the bag of bricks a dozen bricks because bricks weight more than eggs..... if u have 12 eggs and 12 bricks in separate bags what bag would be heavier...the bag of bricks
If bricks weight 4.5 pounds each how many pounds will 200 bricks weight?
200 bricks will weigh 900 pounds in total, since each brick weighs 4.5 pounds.
Which type of force is exerted on the bottom row of bricks in a building?
The bottom row of bricks in a building experience a compression force due to the weight of the bricks and the structure above. This force pushes down on the bricks, causing them to support the weight above them.
What is the weight of 500 bricks?
about 2500 lbs
Why it is better to use bricks instead of stone?
because they are shaped cimetricly allowing for uniform positioning of them.
What weighs more a pound or a pound of bricks?
Both weigh the same amount - one pound. The pound of bricks is made up of many bricks each weighing a fraction of a pound, adding up to one pound in total.
What is the weight of 100 bricks?
The weight of 100 bricks can vary depending on their size and material. On average, a standard clay brick weighs about 5 pounds. Therefore, 100 bricks would weigh around 500 pounds.
From what were pyramids built?
pyramids were usually made of bricks, sandstone, or even sometimes stone weighing 2.5 tons!
