8. A vertical spring is 10.0 cm long when carrying a load of 20.0 kg and 12.0 long when carrying a load of 32.0 kg. How much work is required to stretch the spring from 10.0 cm to 150 cm?
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- 1. To compress spring 1 by 0.20m takes 150 J of work. Stretching spring 2 by 0.30m requires 210J of work. Which spring is stiffer? Explain and draws.The spring in a retractable ballpoint pen is 1.8 cm long, with a 320 N/m spring constant. When the pen is retracted, the spring is compressed by 1.0 mm. When you click the button to extend the pen, you compress the spring by an additional 5.0 mm. How much energy is required to extend the spring?1. How much work was done by a machine that exerts a 5000 N force to compress a 10-meter-long steel bar so it becomes 3 meters in length. 2. Find the angle between the 500 N applied force and the 3-meter displacement if the work done is 1500 Joules. Hiii please write a solution thank you
- 5. A person pulls an object of mass 40 kg as far as 20 m above a flat floor at a constant speed. The force used is directed 370 upwards horizontally. The coefficient of kinetic friction of the object with the floor is 0.20. Determine the work by the person, the work by the frictional force, and the total work on the object.1.The work required to stretch a certain spring from an elongation of 4.00 cm to an elongation of 5.00 cm is 30.5 J. (a) Is the work required to increase the elongation of the spring from 5.00cm to 6.00 cm greater than, less than, or equal to 30.5 J?Draw and Explain. (b)Verify your answer to part (a) by calculating the required work.3. When a 4.00-kg object is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.50 cm. If the 4.00-kg object is removed, (a) how far will the spring stretch if a 1.50-kg block is hung on it? (b) How much work must an external agent do to stretch the same spring 4.00 cm from its upstretched position?