A Smart Fortwo® car has a mass of 730 kg, which we assume on a flat surface is evenly distributed over its four tires. What is the maximum value of static friction on one tire if the coefficient of static friction between the tire and the road is 0.85? Note: In Iceland, though Smart cars are popular, there are special warnings about where to park them because the local winds can be strong enough to move the cars if they are not sheltered.
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- You are out on a hike and come across an unfortunate scene: a fellow hiker has fallen off a ledge. You happen to be carrying a long rope, and bravely decide to help. You tie the rope to a rock of mass mR=500 kgmR=500 kg and make your way over the ledge (see figure). If the coefficient of static friction between the rock and the ground is μS=0.355μS=0.355, and your mass is mH=70.5 kgmH=70.5 kg, what is the maximum mass of the fallen hiker (mFmF) that the rock can hold so that you two can make it back up from the ledge? Assume that where the rope passes the ledge is frictionless and that the rope is parallel to the ground.You are driving a car at a constant speed of 14.0 m/s along a straight level road. As you approach anintersection, the stoplight turns red and you slam on breaks and the wheels lock and you skid to a stop in25.0 m. What is the coefficient of kinetic friction between your tires and the road?Please Asap
- The drawing shows a baggage carousel at an airport. Your suitcase has not slid all the way down the slope and is going around at a constant speed on a circle ((r = 8.90 m) as the carousel turns. The coefficient of static friction between the suitcase and the carousel is 0.640, and the angle 0 in the drawing is 5.90°. How much time is required for your suitcase to go around once? Assumme that the static friction between the suitcase and the carousel is at its maximum.A 200 kg crate rests on a floor with carpet. A tired worker pushes with a horizontal force of 600 N on the crate initially resting on a thick pile carpet. The coefficients of static and kinetic friction are 0.60 and 0.40, respectively. Find the magnitude of the frictional force exerted by the surface of the crate by the carpet. Hint: Which type of friction acts in this case? What are the properties of different kinds of friction? O 1176 N O 784 N O 600 N O 1960 N O 500 N TEALING knongPart 1. We will use a three-wheeled cart on a flat and smooth table. A string is attached to the front of the cart. The other end of the string was wrapped around a smooth pulley with a wight hanger attached to the other end. When we mention the smooth surface of the table and smooth pulley, it means that there is no frictional force affecting the motion. If we add different mass on the weight hanger, we are applying a different pulling force on the cart through the string. If you are given the mass of the cart and given the magnitude of the force, you can calculate the acceleration. We will gradually add the mass on the weight hanger, so we are gradually increasing the pulling force. For each force, you can calculate the acceleration. Force (F) on the cart, Newton Mass (m) of the Cart, kg acceleration=FmFm 1 0.5 1.2 2 1.0 1.2 3 1.5 1.2 4 2.0 1.2 5 2.5 1.2 6 3.0 1.2 You also need plot a graph with acceleration as y-axis and Force as…
- An automobile is going up a grade of 15 with an initial velocity of 30 m/s. The coefficient of static friction between the tires and the road is 0.7. a) What minimum distance does it take to stop the car? b) What minimum distance would it take to stop the car if it were going down the grade?Based on this value, what is the minimum coefficient of static friction μs between the race track and the bicycle?In the Wall of Death carnival attraction, stunt motorcyclists ride around the inside of a large, 10-m-diameter wooden cylinder that has vertical walls. The coefficient of static friction between the riders’ tires and the wall is 0.90. What is the minimum speed at which the motorcyclists can ride without slipping down the wall?
- A rope attached to an engine pulls a 839 N crate up an 18.0° ramp at constant speed. The coefficient of kinetic friction for the surfaces of the crate and ramp is 0.19. What is the magnitude of the force that the rope exerts on the crate parallel to the ramp?Baldwin Young is conducting his famous toupee experiments. He tips his head at a given angle and determines the coefficient of static and kinetic friction between a toupee (which is probably his own) and his scalp. At an angle of just barely 17.5 degrees, the toupee begins to accelerate from rest. Then Baldwin lowers the angle to 13.8 degrees to observe that the toupee moves with a constant speed. Use this information to determine the coefficients of both static and kinetic friction. Begin with a free-body diagram. PSYWSanta Claus tries to drag his bag of presents along a horizontal surface by a red rope that is angled at 55 degrees above the horizontal. Santa Claus applies a force due to tension of 4500N along the red rope. This is the minimum force to just start the bag in motion. The coefficient of kinetic friction between the bag and the ground is 0.3 and the coefficient of static friction is 0.5. What is the mass of the bag?