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2: You want to move your 25-kg spare tire from the floor onto the back of your pickup truck. The bed of your truck is 0.83 meters above the floor. You have found a sturdy rope, and a strong plank to use as a ramp that is 2.8 meters long. The coefficient of kinetic friction between the tire and the plank is uk . Case 1 friction. Case 2 Case 3 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 to 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 (1). 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. Calculate the size of the average force in newtons that you must apply on the tire if you push horizontally to roll it up the ramp. See Case (2).

2: You want to move your 25-kg spare tire from the floor onto the back of your pickup truck. The bed of your truck is 0.83 meters above the floor. You have found a sturdy rope, and a strong plank to use as a ramp that is 2.8 meters long. The coefficient of kinetic friction between the tire and the plank is uk . Case 1 friction. Case 2 Case 3 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 to 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 (1). 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. Calculate the size of the average force in newtons that you must apply on the tire if you push horizontally to roll it up the ramp. See Case (2).

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2: You want to move your 25-kg spare tire from the floor onto the back of your pickup truck. The bed of your truck is 0.83 meters above the floor. You have found a sturdy rope, and a strong plank to use as a ramp that is 2.8 meters long. The coefficient of kinetic friction between the tire and the plank is μk. h Case 1 friction. Case 2 Case 3 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 to 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 (1). 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. See Case (2). Calculate the size of the average force in newtons that you must apply on the tire if you push horizontally to roll it up the ramp. In yet another desperate attempt, you think perhaps that it will be easier to pull the tire up the ramp. You put the tire on the ramp, tie your sturdy rope to the tire, and pull on the rope parallel to the ramp, as shown in Case 3. Calculate the work in joules you will (hopefully) do in moving the tire up the ramp this way given μk = 0.335
Transcribed Image Text:2: You want to move your 25-kg spare tire from the floor onto the back of your pickup truck. The bed of your truck is 0.83 meters above the floor. You have found a sturdy rope, and a strong plank to use as a ramp that is 2.8 meters long. The coefficient of kinetic friction between the tire and the plank is μk. h Case 1 friction. Case 2 Case 3 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 to 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 (1). 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. See Case (2). Calculate the size of the average force in newtons that you must apply on the tire if you push horizontally to roll it up the ramp. In yet another desperate attempt, you think perhaps that it will be easier to pull the tire up the ramp. You put the tire on the ramp, tie your sturdy rope to the tire, and pull on the rope parallel to the ramp, as shown in Case 3. Calculate the work in joules you will (hopefully) do in moving the tire up the ramp this way given μk = 0.335
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