Homework Answers
Question 1
Answer :towards the center of the curve.
Explanation:
When moving on an unbanked curved road then the only force that can provide centripetal force is friction and it acts towards center of the curve.
Question 2:
Answer:The friction force on box 1 is same as that on box 2.
Explanation:
Both the boxes are in motion so force acting on them is kinetic friction. Now as both are identical and and on same rough surface so kinetic friction is same for both as kinetic friction only depends on normal force and surfaces in contact.
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A car is rounding a flat, unbanked curve of constant radius, with constant speed. The direction...
please ansa all A car travels around a curve with constant speed. The correct statement from...
please ansa all
A car travels around a curve with constant speed. The correct statement from the following is the car has an acceleration directed inward toward the center of the curve. the velocity of the car is constant. the car has an acceleration direction outward from the center of the curve. the car has zero acceleration. the car has an acceleration directed in the instantaneous direction of the velocity vector. A ball is whirled on the end of a...
5. A car with mass of 1200 kg rounds a flat, unbanked curve with radius of...
5. A car with mass of 1200 kg rounds a flat, unbanked curve with radius of 250 m. (a) Make a free body diagram of this car (1pts). driver can take the curve without sliding is yos. -18m/s. (6pts) (c) Calculate the coefficient of static friction (u, between tires and road. (6pts) at is the magnitude of the maximum friction force necessary to hold a car on the curve if the maximum speed at which the
A flat (unbanked) curve on a highway has a radius of 240 m . A car...
A flat (unbanked) curve on a highway has a radius of 240 m . A car successfully rounds the curve at a speed of 37 m/s but is on the verge of skidding out. Part A If the coefficient of static friction between the car’s tires and the road surface were reduced by a factor of 2, with what maximum speed could the car round the curve? Express your answer in meters per second to two significant figures. part B...
1. A car is taking an unbanked curve. If you have the information about the radius...
1. A car is taking an unbanked curve. If you have the information about the radius of the curve and the coefficient of the static friction between tires and concrete, how can you determine the maximum speed with which the car can negotiate the curve without sliding out? 2. Under the Universal Law of Gravitation by Newton, how can you explain that gravity acceleration of the planet is the same for all objects in free fall in the surface of...
A man pushing a crate of mass m = 92.0 kg at a speed of v...
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.845 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.357 and he exerts a constant horizontal force of 292 N on the crate. A man pushes a crate labeled m, which moves with a velocity vector v to the right, on...
You pull a box 45 degrees from the horizontal with 50N force. The box is moving...
You pull a box 45 degrees from the horizontal with 50N force. The box is moving at a constant velocity. How much force is done by the kinetic friction? For any problems with tensions, pushing or moving boxes, draw out a free body diagram. You only want the kinetic frictional force which is only on the x direction, so let's sum up the forces in the x Fr=maio (28)
10) When a car makes a turn at a constant velocity, on a flat level road,...
10) When a car makes a turn at a constant velocity, on a flat level road, does the car experience a net force while making the turn? (Be careful Canvas my not have the same order for the answers) No, because the frictional force is equal to the centripetal force. No, because the speed is constant. Yes, it is the frictional force and is directed towards the center Yes, it is the frictional force and is directed outward away from...
a 20.0 kg box is pushed across a rough level floor by means of a A...
a 20.0 kg box is pushed across a rough level floor by means of
a
A 20.0 kg box is pushed across a rough level floor by mEANS of a 5ooN FORCE IP) applied at an angle of 370 below the horizONTAL AS SHOWN. tv P=500N g=9,80 M/A² (a) Draus a free-body ---... 2oka I THTRTTITOT - diagram of the box using the point-mass model. (6) Find the magnitude of the normal contact force (n) that acts on the box....
While moving in, a new homeowner is pushing a box across the floor at a constant...
While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.423. The pushing force is directed downward at an angle θ below the horizontal. When θ is greater than a certain value, it is not possible to move the box, no matter how large the pushing force is. Find that value of θ.
A man pushing a crate of mass m = 92.0 kg at a speed of v...
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.880 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.350 and he exerts a constant horizontal force of 287 N on the crate. (a) Find the magnitude and direction of the net force on the crate while it is on the rough...
please ansa all
A car travels around a curve with constant speed. The correct statement from the following is the car has an acceleration directed inward toward the center of the curve. the velocity of the car is constant. the car has an acceleration direction outward from the center of the curve. the car has zero acceleration. the car has an acceleration directed in the instantaneous direction of the velocity vector. A ball is whirled on the end of a...
5. A car with mass of 1200 kg rounds a flat, unbanked curve with radius of 250 m. (a) Make a free body diagram of this car (1pts). driver can take the curve without sliding is yos. -18m/s. (6pts) (c) Calculate the coefficient of static friction (u, between tires and road. (6pts) at is the magnitude of the maximum friction force necessary to hold a car on the curve if the maximum speed at which the
1. A car is taking an unbanked curve. If you have the information about the radius of the curve and the coefficient of the static friction between tires and concrete, how can you determine the maximum speed with which the car can negotiate the curve without sliding out? 2. Under the Universal Law of Gravitation by Newton, how can you explain that gravity acceleration of the planet is the same for all objects in free fall in the surface of...
You pull a box 45 degrees from the horizontal with 50N force. The box is moving at a constant velocity. How much force is done by the kinetic friction? For any problems with tensions, pushing or moving boxes, draw out a free body diagram. You only want the kinetic frictional force which is only on the x direction, so let's sum up the forces in the x Fr=maio (28)
10) When a car makes a turn at a constant velocity, on a flat level road, does the car experience a net force while making the turn? (Be careful Canvas my not have the same order for the answers) No, because the frictional force is equal to the centripetal force. No, because the speed is constant. Yes, it is the frictional force and is directed towards the center Yes, it is the frictional force and is directed outward away from...
a 20.0 kg box is pushed across a rough level floor by means of
a
A 20.0 kg box is pushed across a rough level floor by mEANS of a 5ooN FORCE IP) applied at an angle of 370 below the horizONTAL AS SHOWN. tv P=500N g=9,80 M/A² (a) Draus a free-body ---... 2oka I THTRTTITOT - diagram of the box using the point-mass model. (6) Find the magnitude of the normal contact force (n) that acts on the box....
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