Part (a) What is the minimum work in Joules you will do in rolling the tire all the way up the ramp as shown in Case (1)? Neglect any losses due Part (b) Calculate the size of the average force in Newtons that you must apply on the tire if you push in a direction parallel to the ramp? See Case Part (c) After a few unsuccessful tries, your friend suggests that you push the tire up the ramp by applying a horizontal force, as shown in Case (2). Calculate the work in Joules you will (hopefully) do in moving the tire up the ramp this way. Again, neglect any frictional losses. W₂=1

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter6: Applications Of Newton's Laws
Section: Chapter Questions
Problem 47P: (a) What is the maximum frictional force in the knee joint of a person who supports 66.0 kg of her...
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answer parts a, b, and c

Problem 3: You want to move your m = 21 kg spare tire from the floor onto the back of
your pickup truck. The bed of your truck is h = 0.86 m above the floor. You have found a sturdy
rope, and a strong plank to use as a ramp that is d = 2.8 m long. The coefficient of kinetic friction
between the tire and the plank is u.
h Case 1
Case 2
Case 3
Part (a) What is the minimum work in Joules you will do in rolling the tire all the way up the ramp as shown in Case (1)? Neglect any losses due
Part (b) Calculate the size of the average force in Newtons that you must apply on the tire if you push in a direction parallel to the ramp? See Case
Part (c) After a few unsuccessful tries, your friend suggests that you push the tire up the ramp by applying a horizontal force, as shown in Case
(2). Calculate the work in Joules you will (hopefully) do in moving the tire up the ramp this way. Again, neglect any frictional losses.
W₂ =
Transcribed Image Text:Problem 3: You want to move your m = 21 kg spare tire from the floor onto the back of your pickup truck. The bed of your truck is h = 0.86 m above the floor. You have found a sturdy rope, and a strong plank to use as a ramp that is d = 2.8 m long. The coefficient of kinetic friction between the tire and the plank is u. h Case 1 Case 2 Case 3 Part (a) What is the minimum work in Joules you will do in rolling the tire all the way up the ramp as shown in Case (1)? Neglect any losses due Part (b) Calculate the size of the average force in Newtons that you must apply on the tire if you push in a direction parallel to the ramp? See Case Part (c) After a few unsuccessful tries, your friend suggests that you push the tire up the ramp by applying a horizontal force, as shown in Case (2). Calculate the work in Joules you will (hopefully) do in moving the tire up the ramp this way. Again, neglect any frictional losses. W₂ =
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