10. To meet a U.S. Postal Service requirement, employees' footwear must have a coefficient of static friction of 0.5 or more on a specified tile surface. A typical athletic shoe has a coefficient of static friction of 0.800. In an emergency, what is the minimum time interval in which a person starting from rest can move 3.00 m on the tile surface if she is wearing (a) footwear meeting the Postal Service minimum and (b) a typical athletic shoe? Answers: a) 1.11s b) 0.875 s
Q: 47. To meet a U.S. Postal Service requirement, employees' foot wear must have a coefficient of…
A: Given values:Minimum coefficient of static friction of footwear, Coefficient of static friction of…
Q: You are pulling your luggage at an air port for an international flight. You know not to pack too…
A:
Q: A 51.5-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic…
A: Given data: Mass (m) = 51.5 kg Coefficient of static friction (μs) = 0.592 Coefficient of kinetic…
Q: A 5.00-kg box is initially at rest on a level surface. The coefficient of static friction between…
A:
Q: A 100kg box is at rest on a 10◦ ramp and is being held up by the force of static friction. What is…
A: This problem can be solved using the free body diagram and then using Newton's second law for force…
Q: In a mail-sorting facility, a 2.50-kg package slides down an inclined plane that makes an angle of…
A:
Q: You are lowering two boxes, one on top of the other, down the ramp as shown in the figure by pulling…
A: Concept: The Schematic diagram for the Upper box is From the diagram, we can see that Frictional…
Q: A 10 kg box is pulled along a horizontal surface by a force of 40 N applied at a 30 ̊ angle from the…
A:
Q: a) A 3.800 kg block of wood rests on a steel desk. The coefficient of static friction between the…
A: Given, Mass of block (m) = 3.8 kg Coefficient of static friction between block and desk (µs) =…
Q: A (10 kg) block sits on top of an plane inclined by (32 degrees) to the horizontal. There is a…
A: M = 10 kg Φ = 32 ⁰ μ = 0.1 H = 4 m sinΦ = H/d => d = H/SinΦ => d = 4/Sin(32) = 4/0.529…
Q: A 50.5-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic…
A:
Q: A man is pulling two boxes, one on top of the other, up the ramp shown by pulling on a rope parallel…
A: We need to find out the magnitude of the maximum acceleration the man can pull the boxes up the ramp…
Q: A M1 =1000-kg car is on a rough ramp that is inclined at θ = 20° above the horizontal. It is…
A:
Q: (a) If the box doesn't move, what's the magnitude of the static friction force (in N)? N (b) What is…
A:
Q: 2. Consider an armchair sitting on the flat surface of a floor. The armchair has a mass of 25.0 kg.…
A: Given information: The mass of the armchair (m) = 25.0 kg The coefficient of static friction…
Q: The coefficient of static friction between a sled and the snow is 0.3, with a coefficient of kinetic…
A:
Q: A heavy box of mass M is found at rest on an inclined loading ramp as indicated in the figure. The…
A:
Q: Consider the figure shown in the following figure. You are lowering two boxes, one on top of the…
A:
Q: A car is traveling at 50 mi/h on a straight horizontal highway. TI on the brakes to stop the car. a)…
A: initial velocity velocity of the car, V1 = 50mi/h =50 * 1 / 2.237 m/s = 22.35 m/s final velocity…
Q: 7. A 8.00 kg block is pressed against a vertical wall by a force (F), as shown in the figure below.…
A:
Q: An incline makes an angle of 15.4 with the horizontal. A 6.50-kg block slides down the incline. The…
A: Since you have posted a question with multiple subparts , we will solve first three subparts for…
Q: What maximum distance can the truck travel
A: Given that,Friction coefficient = 0.18Time = 4.0 sInitial velocity = 0We need to calculate the…
Q: it moving. With what horizontal force F must you be pushing the block just before the block begins…
A:
Q: The coefficient of static friction between an 8 kg box at rest and a 35° inclined plane is 0.70.…
A:
Q: A block weighing 80N rests on a plane inclined at 20o to the horizontal. The coefficient of static…
A:
Q: 3. (a) A 1700 kg car is parked on a road that rises 18° above the horizontal. What are the…
A: I hope this can help you.
Q: F(t) Force_Crate Known values: Mass of Block 68 kg Hs k 0 0.63 0.53 26° Problem Statement: A crate…
A: Disclaimer: “Since you have asked posted a question with multiple sub-parts, we will solve the first…
Q: 1. You are working as a letter sorter in the Post Office. Postal regulations require that employees'…
A: Given : Static friction = 0.5 S = 4.23
Q: A 110 g hockey puck sent sliding over ice is stopped in 15 m by the frietional force on it from the…
A: In the system consisting of the puck and ice , there are two types of forces acting in the…
Q: The coefficient of static friction between Teflon and scrambled eggs is about 0.029. What is the…
A:
Q: A constant force Fa pushes a 22.5-kg box across a rough horizontal surface. The magnitude of Fa is…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 11. Jason works for a moving company. A crate of mass m is sitting on a ramp on his truck; the ramp is angled at an angle with respect to the horizontal. The coefficients of static friction and kinetic friction between the crate and his truck bed are p, and , respectively. What is the magnitude of the force, directed parallel to the ramp, that he needs to exert on the crate to get it to start moving (a) up the ramp and (b) down the ramp? Your answers will be in terms on the symbols m, 0, μs, k and g.Problem 1: While training on the planet Dagobah, Luke Skywalker is asked by Yoda to hold a block with a mass of 6.80kg against a vertical wall using only the Force. Luke applies the Force with a magnitude of 115.0N at an angle of 52.0° with respect to the horizontal. Luke discovers that if the Force increases any more, the block begins to slide up the wall. What is the coefficient of static friction between the block and the wall? Assume that gravity on Dagobah is the same as gravity on Earth.You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of 263 N in the negative x direction to try and move the 53 kg refrigerator. The coefficient of static friction is 0.70. (a) How much static frictional force does the floor exert on the refrigerator? Give both magnitude (in N) and direction. magnitude N direction -Select--- ✓ (b) What maximum force (in N) do you need to apply before the refrigerator starts to move? N
- A100-kg sofa needs to be moved across a level floor. The coefficient of static friction between the sofa and the floor is 0.40. Two physics students decide to apply a force F!" on the sofa. One student recommends that the force be applied upward at an angle theta above the horizontal. The other student recommends that the force be applied downward at an angle theta below the horizontal. Explain which student has the better idea and why.A 150-lb block rests on a horizontal surface. The coefficient of static and kinetic frictions between the block and the surface are 0.30 and 0.20, respectively. What is the acceleration of the block when P = 90 lb. P μs=0.30, μk=0.20 150 lb9. A 75 N crate is at rest on an incline that is inclined a 25° above the horizontal. The coefficient of static friction between the crate and the incline is 0.25 and the coefficient of kinetic friction between the crate and the incline is 0.15. (a) What is the minimum magnitude of a force parallel to the incline that will prevent the crate from sliding down the incline? (b) What is the minimum magnitude of the force parallel to the incline that will start the crate to move up the incline? (c) Include a force (or free body) diagram of each situation.
- Question 8. A 5.41-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.369. Determine the kinetic frictional force that acts on the box when the elevator is (a) stationary, (b) accelerating upward with an acceleration whose magnitude is 2.64 m/s², and (c) accelerating downward with an acceleration whose magnitude is 2.64 m/s².Ans: 19.56 N; 24.83 N; 14.29 NMY NOTES ASK YOUR TEACHER A Mercedes-Benz 300SL (m = 1750 kg) is parked on a road that rises 20° above the horizontal. (a) What is the magnitude of the normal force? X N 16.1 8 9. (b) What is the static frictional force that the ground exerts on the tires? 5.86 Additional Materials 6. D eBook Submit Answer ?? TOO 2,197 MacBook Air %23 3 4 2 E RO H. D F 3. 2.A girl exerts a horizontal force of 133 N on a box with a mass of 33.2 kg. (a) If the box doesn't move, what's the magnitude of the static friction force (in N)? N (b) What is the minimum possible value of the coefficient of static friction between the box and the floor? (Assume the box remains stationary.)