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(2.) A car goes over a hill with a constant speed. Ignoring...
A. Imagine a car (1000 kg), that feels horizontal forces: a drag force, a forward-pointing rolling...
A. Imagine a car (1000 kg), that feels horizontal forces: a drag force, a forward-pointing rolling friction force (frF)on two of its tires, and a backward-pointing rolling friction force (fre) on its other two tires. The car is speeding up. The car is moving to the left. Therefore, I choose to make left the positive direction. Here is a free-body diagram (not quite complete) that shows all the forces acting on the car. To be a complete free-body diagram, there...
You look over the shoulder of your friend doing a physics problem about a car moving...
You look over the shoulder of your friend doing a physics problem about a car moving over a crest on a hill that approximates a circular path and the car moves with constant speed. Your friend says "I know the answer! The centripetal force plus the normal force cause the upward acceration of the car!!" You want to help out your friend, so what would you tell them? If the car has constant speed then there is no acceleration. Actually...
A car of mass 1000 kg is driving up a 30° slope at constant speed. Draw...
A car of mass 1000 kg is driving up a 30° slope at constant speed. Draw the free body diagram for the car (accurately!) and label the magnitude of each of the forces. The correct answer is: Friction = 4900 N Weight = 9800 N Normal force = 8487 N How to get it??
2. Calculate the speed of the car when it reaches the barrier but has not compressed...
2. Calculate the speed of the car when it reaches the barrier
but has not compressed the barrier yet.
3. Determine the energy lost by friction.
4. Calculate the maximum compression of the spring barrier.
Explain your reasoning.
5. Assuming that the car bounces off the spring barrier with no
loss of energy, how far does the car slide on this road before
stopping?
6. Determine the maximum deceleration experienced by the
occupants and the corresponding maximum force exerting by...
A person pulls a block across a rough horizontal surface at a constant speed by applying...
A person pulls a block across a rough horizontal surface at a constant speed by applying a force F at a slight angle as shown. A free-body force diagram is drawn for the block. The arrows in the diagram correctly indicate the directions, but not necessarily the magnitudes of the various forces on the block A student states that F fk and Fv W (here W stands for weight, which we call Fc) since the velocity is constant and thus...
70kg is sliding up on a hill side at an A mass m incline angle 0...
70kg is sliding up on a hill side at an A mass m incline angle 0 = 30°. The initial velocity of the mass is vi 30m/s, and no external force is applied to the mass on the incline. The height of the structure ish = 25 m Note that the static friction coefficient of snow is i, = 0.5, and kinetic friction coefficient of snow is 0.4. Use the principles of energy and work to find the answen to...
5, Some of the funniest videos on the web involve motorists sliding uncontrollably on icy roads. Here let's compare the typical stopping distances for a car sliding to a stop from an initial...
5, Some of the funniest videos on the web involve motorists sliding uncontrollably on icy roads. Here let's compare the typical stopping distances for a car sliding to a stop from an initial speed of 10.0 m/s on a dry horizontal road, an icy hori- zontal road, and (everyone's favorite) an icy hill. (a) How far does the car take to slide to a stop on a hori- zontal roadi if the coefficient of kinetic friction is = 0.60, which...
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level...
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level circular turn of radius 46.0 m, as shown in the bird's-eye view in Figure 7.13a. What minimum coefficient of static friction, Aus, between the tires and the roadway will allow the car to make the circular turn without sliding? Strategy In the car's free-body diagram (Fig. 7.13b) the normal direction is vertical and the tangential direction is into the page (step 2). Use Newton's...
P6.2-3) A RWD 2011 Corvette Coupe's technical specifications are listed below Assuming that the a...
please answer all questions
P6.2-3) A RWD 2011 Corvette Coupe's technical specifications are listed below Assuming that the air drag is constant, applied at the center of mass, and equal to 100 lb and the rolling resistance coefficient is f 0014, what is the cars maximum acceleration on level ground and driving uphill on a road with a 10% grade? Estimate the friction characteristics as that between rubber and dry asphalt and note that the total rolling resistance is equal...
draw free body diagrams and answer questions please Draw the free body diagram for the bob...
draw free body diagrams and answer questions please
Draw the free body diagram for the bob (note that the spring is not attached at this time): bobt Equilibrium Marker 2. How does spinning the bob faster affect the period (time required for 1 full revolution)? The period increases. It takes more for the bob to go around once. The period stays the same. The period decreases. It takes less time for the bob to go around once. to the centripetal...
A. Imagine a car (1000 kg), that feels horizontal forces: a drag force, a forward-pointing rolling friction force (frF)on two of its tires, and a backward-pointing rolling friction force (fre) on its other two tires. The car is speeding up. The car is moving to the left. Therefore, I choose to make left the positive direction. Here is a free-body diagram (not quite complete) that shows all the forces acting on the car. To be a complete free-body diagram, there...
2. Calculate the speed of the car when it reaches the barrier
but has not compressed the barrier yet.
3. Determine the energy lost by friction.
4. Calculate the maximum compression of the spring barrier.
Explain your reasoning.
5. Assuming that the car bounces off the spring barrier with no
loss of energy, how far does the car slide on this road before
stopping?
6. Determine the maximum deceleration experienced by the
occupants and the corresponding maximum force exerting by...
A person pulls a block across a rough horizontal surface at a constant speed by applying a force F at a slight angle as shown. A free-body force diagram is drawn for the block. The arrows in the diagram correctly indicate the directions, but not necessarily the magnitudes of the various forces on the block A student states that F fk and Fv W (here W stands for weight, which we call Fc) since the velocity is constant and thus...
70kg is sliding up on a hill side at an A mass m incline angle 0 = 30°. The initial velocity of the mass is vi 30m/s, and no external force is applied to the mass on the incline. The height of the structure ish = 25 m Note that the static friction coefficient of snow is i, = 0.5, and kinetic friction coefficient of snow is 0.4. Use the principles of energy and work to find the answen to...
5, Some of the funniest videos on the web involve motorists sliding uncontrollably on icy roads. Here let's compare the typical stopping distances for a car sliding to a stop from an initial speed of 10.0 m/s on a dry horizontal road, an icy hori- zontal road, and (everyone's favorite) an icy hill. (a) How far does the car take to slide to a stop on a hori- zontal roadi if the coefficient of kinetic friction is = 0.60, which...
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level circular turn of radius 46.0 m, as shown in the bird's-eye view in Figure 7.13a. What minimum coefficient of static friction, Aus, between the tires and the roadway will allow the car to make the circular turn without sliding? Strategy In the car's free-body diagram (Fig. 7.13b) the normal direction is vertical and the tangential direction is into the page (step 2). Use Newton's...
please answer all questions
P6.2-3) A RWD 2011 Corvette Coupe's technical specifications are listed below Assuming that the air drag is constant, applied at the center of mass, and equal to 100 lb and the rolling resistance coefficient is f 0014, what is the cars maximum acceleration on level ground and driving uphill on a road with a 10% grade? Estimate the friction characteristics as that between rubber and dry asphalt and note that the total rolling resistance is equal...
draw free body diagrams and answer questions please
Draw the free body diagram for the bob (note that the spring is not attached at this time): bobt Equilibrium Marker 2. How does spinning the bob faster affect the period (time required for 1 full revolution)? The period increases. It takes more for the bob to go around once. The period stays the same. The period decreases. It takes less time for the bob to go around once. to the centripetal...
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