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Can someone help with 5-8? Please thanks
1. Your little sister wants a ride on her sled. You agreed and moved the sled-sister combination by pulling it across a level ground with a force of F, at constant velocity of 0.5 m/s at an angle of 50 degrees with the horizontal. Assume that the sled-sister combination has a weight of 350 N and the coefficient of kinetic friction is 0.15. A) Draw a neat free-body diagram B) Calculate your force Fo C) Calculate the friction force (15 points) 2. Do the same as in problem 1 but with pushing the sled-sister combination instead of pulling it. Use the percent difference to compare your results from this case to the results from the case in problem #1. (15 points) 3. Which is easier, to push or pull the sled-sister combination? Explain why. (10 points) Will you need to apply more force, same force or less force to move the sled-sister combination with constant velocity of 1 m/s instead of 0.5? Why? 4. (10 points) Calculate your force F, as in problem # 1 with everything the same but assume that the sled. sister combination is moving with an acceleration of 1 m/s. Use the percent difference to compare your results from this case to the results from the case in problem #1. 5. (15 points) Will you need to apply more force, same force or less force to move the sled-sister combination at a smaller angle with the horizontal? Why? 6. (10 points) Calculate your force F, as in problem # 1 with everything the same but assume that the sled. sister combination is moving at an angle of 20 degrees with the horizontal. Use the percent difference to compare your results from this case to the results from the case in problem #1. (15 points) 8. Why is it ok to assume that the kinetic friction coefficient is the same in all cases? (10 points)
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