Lesson_2.1_Homework

Lesson_2.1_Homework - Lesson 6 Homework 1. 2. 3. 4. Give a...

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Lesson 6 Homework 1. Give a definition for force using Newton’s first law of motion. 2. What is inertia? How is the concept of inertia used to define mass? 3. Distinguish between mass and weight of an object. 4. A 150-kg steel block is raised uniformly using a cable. What is the tension on the cable? 5. An ocean liner has a total mass of 50,000 metric tons. What constant force would give the liner an acceleration of 0.2 ms -2 ? 6. What is the force acting on a 10 kg iron ball that is in free fall? 7. What is the unbalanced force acting on a 1000-kg car that is moving with a uniform velocity of 20 ms -1 ? 8. A 100 kg load is being moved by a crane. Find the tension in the cable that supports the load as (a) it is accelerated upward at 2.0 m.s -2 . (b) It is lifted at constant speed. (c) it moves upward with speed decreasing by 2 m.s -1 each second. 9. The figure below shows how the force acting on an object changes with time. 0 2.0
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This note was uploaded on 05/01/2011 for the course PHY 2048 taught by Professor George during the Fall '10 term at Edison State College.

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Lesson_2.1_Homework - Lesson 6 Homework 1. 2. 3. 4. Give a...

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