A truck pulls a trailer with a frictional force of 870 N and a coefficient of friction of 0.23. What is the trailer's normal force?
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A: mass of the book (m) = 731 grams = 0.731 kg coefficient of static friction (μs) = 0.29 coefficient…
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- A book of mass 9 kg rests on a plank. You tilt one end of the plank and slowly increase the angle of the tilt. The coefficient of static friction between the book and the plank is 0.48. What is the maximum angle of tilt for which the book will remain stationary and not slide down the plank?A child is walking along the sidewalk at a constant speed of 1 m/s while pulling his dog sitting in a wagon. The dog has a mass of 30 kg and the wagon weighs 50 N. If the child pulls the wagon with a force of 60 N at an angle of 30°, what is the frictional force exerted by the wagon on the dog?A force of 109 N is used to accelerate a block of ice with a weight of 614 N along a horizontal surface where it encounters a kinetic friction force of 38 N. What is the horizontal acceleration of the block of ice?
- You are at the grocery store pushing on a shopping cart. The mass of the cart including all the delicious food you will buy is 22.0 kg. The coefficient of friction between the floor and the wheels of the shopping cart is 0.22. In order to accelerate the cart to 2.20 m/s from rest in 2.20 m, what force must you apply to the cart?A truck with a mass of 750 kg is traveling along a wet road at 30.0 m/s The driver slams on the brakes and skids to a stop. If the coefficient of kinetic friction between the tires and the road is 0.50: what frictional force stops the truck? how far does it skid?A horizontal force of 734 N is needed to overcome the force of static friction between a level floor and a 132 kg crate. What is the acceleration of the crate if the 734 N force is maintained after the crate begins to move and the coefficient of kinetic friction is 0.07?
- What is the magnitude of the normal force the object is receiving from the surface if the coefficient of friction between the object and the surface it is on is 0.26 and it experiences a force of friction of magnitude 59.5N? Fn = unitMary applies a force of 77 N to push a box with an acceleration of 0.55 m/s2. When she increases the pushing force to 85 N, the box's acceleration changes to 0.71 m/s2. There is a constant friction force present between the floor and the box. (a) What the mass of the box in kilograms? kg (b) What is the coefficient of kinetic friction between the floor and the box?A 32 kg child puts a 15 kg box into a 12 kg wagon. The child then pulls horizontally on the wagon with a force of 65 N. If the box does not move relative to the wagon, what is the static friction force on the box?
- Just like Louis, Maria left a book on the roof of her car before driving away. The mass of the book was 725 grams. The coefficient of static friction between the book and the roof was 0.28. The coefficient of kinetic friction between the book and the roof was 0.23. Maria started her car and drove forward on level ground with an acceleration of 3.6 m/s?. As Maria was driving away with that acceleration, what was the magnitude of the force of friction (in newtons) between the book and the roof of the car?A crate is pushed across a horizontal surface by the applied force shown in the figure. The magnitude of the force F = 24.1 N, 0 = 27.9°, the coefficient of kinetic friction between the block and the surface is 0.4, and M = 2.49 kg, what is the magnitude of the acceleration of the crate in m/s?