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The log has a mass of m = 859 kg: the truck has a mass of M = 9350 kg. According to the truck manufacturer, the truck can accelerate from 0 to 55 mph in 26.0 s, but this does not account for the additional mass of the log. Calculate the minimum coefficient of static friction , needed to keep the log in the back of the truck.

The log has a mass of m = 859 kg: the truck has a mass of M = 9350 kg. According to the truck manufacturer, the truck can accelerate from 0 to 55 mph in 26.0 s, but this does not account for the additional mass of the log. Calculate the minimum coefficient of static friction , needed to keep the log in the back of the truck.

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While hauling a log in the back of a flatbed truck, a driver is pulled over by the state police. Although the log cannot roll sideways, the police claim that the log could have slid out the back of the truck when accelerating from rest. The driver claims that the truck could not possibly accelerate at the level needed to achieve such an effect. Regardless, the police write a ticket, and the driver's court date is approaching. The log has a mass of m = 859 kg; the truck has a mass of M = 9350 kg. According to the truck manufacturer, the truck can accelerate from 0 to 55 mph in 26.0 s, but this does not account for the additional mass of the log. Calculate the minimum coefficient of static friction 4, needed to keep the log in the back of the truck. 0.085 Incorret According to the scientific literature, the coefficient of static friction between the log and the trailer bed should be roughly 0.840. Given this fact, select the most accurate statement. The results are not conclusive. There is little chance a
Transcribed Image Text:While hauling a log in the back of a flatbed truck, a driver is pulled over by the state police. Although the log cannot roll sideways, the police claim that the log could have slid out the back of the truck when accelerating from rest. The driver claims that the truck could not possibly accelerate at the level needed to achieve such an effect. Regardless, the police write a ticket, and the driver's court date is approaching. The log has a mass of m = 859 kg; the truck has a mass of M = 9350 kg. According to the truck manufacturer, the truck can accelerate from 0 to 55 mph in 26.0 s, but this does not account for the additional mass of the log. Calculate the minimum coefficient of static friction 4, needed to keep the log in the back of the truck. 0.085 Incorret According to the scientific literature, the coefficient of static friction between the log and the trailer bed should be roughly 0.840. Given this fact, select the most accurate statement. The results are not conclusive. There is little chance a
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static frietion between the sled and the ground is 4, = 0.571, the coefficient of kinetic friction is = 0.405, and the combined mass of the sled and its load is m = 306 kg. The ropes are separated by an angle o = 28", and they make an angle e with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? 1134.47 tension: incorrect
Transcribed Image Text:A heavy sled is being pulled by two people as shown in the figure. The coefficient of static frietion between the sled and the ground is 4, = 0.571, the coefficient of kinetic friction is = 0.405, and the combined mass of the sled and its load is m = 306 kg. The ropes are separated by an angle o = 28", and they make an angle e with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? 1134.47 tension: incorrect
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