Friction Lab Report Example | Topics and Well Written Essays - 1000 words - 2

Friction - Lab Report Example From the experiment, it is clear that the static friction force for block with one weight and block for two weight is higher than the kinetic friction force for both masses. This is to enable the object move at a constant velocity. The static friction force for block with one weight and two weight were 6.254  ± 0.7658 N and 3.773  ± 0.4060 N respectively. While the kinetic friction for the same masses was 2.472  ± 0.1193 N and 1.361 ± 0.09464 N. respectively. On the other hand, the co-efficient of static friction for block with one weight and two weight was 0.6134  ±0.20297 and 0.5667 ± 0.1224 respectively. While, co-efficient of kinetic friction for the same masses were 0.22127 ± 0.1224 and 0.22400  ± 0.019076. Both the coefficient of static and kinetic friction was consistent with the values obtained by other groups. These result shows that the coefficient of static friction reduces as more weight is added to the object. The same scenario is also witnessed with the coefficient of kinetic friction. However, for a clear relationship to be obtained between the co-efficient of both static and kinetic friction more weights needs to be added on the object so as to obtain a good relationship. The obtained results showed that 70 % of the measurement lied in the (average  ± one std. deviation). While, 97.5 % of the friction force lied in the (average  ± two std. deviation). Even though, the percentages of the measurements that lie (average  ± one std. deviation) and (average  ± two std. deviation) are slightly higher than 68 % and 95 % respectively. These results are can be said to be normally

Compare role science & technology play in Lunar Men & Heart of Essay

Compare role science & technology play in Lunar Men & Heart of Darkness. How have attitudes & uses of them changed - Essay Example le genius and ability to make new things, gain a deep understanding of the world both philosophically and physically—their inventions too are used to allow other people to more profoundly understand the physical world. In Heart of Darkness, it is the West’s ability to harness technology that makes the minerals and rubber of the Congo valuable and that makes it important to extract such products. But the novel also shows the limits to human’s knowledge—even using technology and science humans cannot know everything. When they think the do, trouble occurs. These aspects of the roles of science and technology will be looked at in this essay. One of the main points of the book Lunar Men is the sheer joy of the intellectual curiosity Uglow’s heroes possess and show. They want to find out about the world, they want to learn new things. It is this sense of adventure and exploration that drives them, even though they don’t really leave their hometown—they just meet in person. The adventure is what they learn about the world through their scientific experiments and from sharing information and curiosity with one another. It isn’t a physical journey across the world. Indeed, they don’t need to take such a journey because they can bring the world to themselves through their experiments and discoveries. Boulton, for example, when he is starting out feels an air of energy surrounding him and feels the time is ripe for â€Å"adventure,† but he doesn’t get on a merchant ship. Instead: â€Å"Armed with the security of Anne’s money and his own inheritance from his father, Boulton made plans. The workshop and warehouse on Snow Hill were too small and he dreamed of a site big enough to have stores of raw materials, drawing and design rooms, workshops for all stages and products, and a warehouse for finished goods. He also wanted a mill to drive machines . . .† (65) The latest technologies let him stay at home. For other men, like Robinson, for example, worldly