Calculus and Above

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How does increasing the mass of the crate affect the maximum
How does increasing the mass of the crate affect the maximum static friction and kinetic friction on it?How does increasing the mass of the crate affect the coefficient of static friction and coeffici… read more
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As soon as the box begins to move, the friction becomes
As soon as the box begins to move, the friction becomes kinetic. Find out the kinetic friction force on the crate, Record this value in Table 1Maximum static friction fs,max (N) for both data tablesDr… read more
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An old car tire (I = MR2) is placed at a vertical height of
An old car tire (I = MR2) is placed at a vertical height of 2.9 m on a slope that makes a 17° angle with the horizontal. It is released from rest and rolls without slipping to the bottom of the slope.… read more
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A car can safely make a turn around a flat curve at a
A car can safely make a turn around a flat curve at a maximum speed (v) with a coefficient of friction of .53. If the same curve were banked, what angle would allow the car to make the turn without an… read more
Tom
Master's Degree
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A skater rounds a corner with a radius 10 meters going 12
A skater rounds a corner with a radius 10 meters going 12 m/s. What is the minimum coefficient due to friction that will allow her to make this turn without wiping out? Draw the free body diagram of t… read more
Prof. Morris
Professor
Ph. D.
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A box of mass 15.6 kg starts at rest and is pulled by a
A box of mass 15.6 kg starts at rest and is pulled by a force of 37.9 N at an angle of 35.0 to the horizontal. After being pulled at a distance of 4.47 meters the velocity of the box is 1.42 m/s. What… read more
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Master's Degree
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A 1.21kg toaster is not plugged in. The coefficient of
A 1.21kg toaster is not plugged in. The coefficient of static friction between the toaster and a horizontal countertop is 0.385. To make the toaster start moving, you carelessly pull on its electric c… read more
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The diagram below is that of a roller coaster track. The
The diagram below is that of a roller coaster track. The roller coaster car moves without friction on the track, never losing contact. If it starts from rest, calculate the speed of the roller coaster… read more
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A pickup truck is loaded with crates of oranges. The crates
A pickup truck is loaded with crates of oranges. The crates have a co-efficient of static friction of 0.257 with the floor of the truck. When the truck is traveling at a speed of 48.5km/hr, in how sho… read more
Debdatta Bhattachary
Physics and Math tutor
Doctoral Degree
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A 1.21kg toaster is not plugged in. The coefficient of
A 1.21kg toaster is not plugged in. The coefficient of static friction between the toaster and a horizontal countertop is 0.385. To make the toaster start moving, you carelessly pull on its electric c… read more
Debdatta Bhattachary
Physics and Math tutor
Doctoral Degree
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A skater of mass m standing on ice throws a stone of mass M
A skater of mass m standing on ice throws a stone of mass M with speed v in a horizontal direction. Find the distance over which the skater will move in the opposite direction if the coefficient of ki… read more
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Crall and Whipple design a loop-the-loop track for a small
Crall and Whipple design a loop-the-loop track for a small toy car (see figure below). The car starts at height (yi) above the bottom of the loop, goes through the loop of radius R, and then travels a… read more
akch2002
Master's Degree
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Crall and Whipple design a loop-the-loop track for a small
Crall and Whipple design a loop-the-loop track for a small toy car (see figure below). The car starts at height (yi) above the bottom of the loop, goes through the loop of radius R, and then travels a… read more
akch2002
Master's Degree
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On a highway curve with radius 54 m, the maximum force of
On a highway curve with radius 54 m, the maximum force of static friction (centripetal force) that can act on a 1,123-kg car going around the curve is 7,727 N. What speed limit should be posted for th… read more
akch2002
Master's Degree
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I'm making a reflector that's 3.39 units wide and 2 units
I'm making a reflector that's 3.39 units wide and 2 units high, so f(3.39)=2. The light comes straight down and should reflect left at a 90 degree angle. I need the equation for the curve.… read more
Ryan
Bachelor's Degree
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Chap. 7, #10. (II) A 3800-kg open railroad car coasts along
Chap. 7, #10. (II) A 3800-kg open railroad car coasts along with a constant speed of 8.60 m/s on a level track. snow begins to fall vertically and fills the car at a rate of 3.50 kg/min. Ignoring fric… read more
akch2002
Master's Degree
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Car A is travelling at a steady speed of 20ms-1(approximately
Car A is travelling at a steady speed of 20ms-1(approximately 45mph) in a straight line(north) when it is hit from the left side by car B. The mass of each car is the same, and it can be assumed that … read more
Osbert12
Master's Degree
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The U.S Department of Transportation and Safety performed an
The U.S Department of Transportation and Safety performed an analysis to determine safe driving speeds. To obtain information about the safe driving speed, it analyzed data from multiple countries com… read more
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Master's Degree
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