What Is The Moral Lesson In The Story The Golden Chain
What is the moral lesson in the story the golden chain
The chain is not silverThe Work Done In Lifting A 30 Kg Set Of Bricks To A Height Of 20m Is
The work done in lifting a 30 kg set of bricks to a height of 20m is We all know the FORMULA IN FINDING WORK is W = F x D Where W is work; F is force; and D is distance However, let us first discuss what work really is. When there is an object being moved by a force through a certain distance, the measure of energy transfer is what we call WORK . One of the most common units used in work is JOULES (commonly used as a unit of energy). It is the work by which 1 Newton (1N = 1 kg.m/sec^2) of force is used/expended through a distance of 1 meter (1m). Refer to the problem. It is said that the 30 kg set of bricks are to be raised in a height of 20 meters. As we see, there is no force given. But recall that force (F) is the product of mass (m) of an object and its acceleration (a) F = ma However, in the formula, (g = 9.81 m/s^2) or acceleration due to gravity is used in replacement of (a) because the object is moving upward. So now we have F = mg Thus, we have the new ...
Comments
Post a Comment