makes an angle of θ with the horizontal as shown. μk is the kinetic coefficient of friction and μs is the static coefficient of friction. 1.Enter an expression for the minimum angle θ (in degrees) the box will begin to slide. 2.Enter an expression for the nonconservative work done by kinetic friction as the block slides down the plank. Assume the box starts from rest and θ is large enough that it will move down the plank.  3.For a plank of any length, at what angle θ (in degrees) will the final speed of the box at the bottom of the plank be 0.85 times the final speed of the box when there is no friction present? Assume μk = 0.39.

Q: A 1250 kg car drives up a hill that is 15.2 m high. During the drive, two nonconservative forces do…

A: Given data: -Mass of the car (m)=1250 kgThe work done by fraction (Wf)=−2.91∗105 JThe work done by…

Q: Part A What is the change in mechanical energy of the airplane if it climbs to a cruising altitude…

A: Given Mass of the airplane = 1865 kg Velocity of the plane = 94.5 m/s Height of the plane =  2520 m…

Q: A 1400-NN crate rests on the floor.     Part A How much work is required to move it at constant…

A: Write the given values of this problem. frictional force(f)=310 NDistance(d)=5 mm or 5×10-3 m

Q: Please answer in 30 min. i will upvote

A:

Q: 2. An 8.0kg box slides down a surface that is inclined at 53° below the horizontal at a distance of…

A: (A) The work done due to friction is, Wfriction= Ffriction.d Here, " Wfriction is the work done due…

Q: A box of mass 5.0 kg is accelerated from rest across a floor at a rate of 3.0 m/s? for 5.0 s. Part A…

A:

Q: Sam, whose mass is 66 kg, straps on his skis and starts down a 52 m - high, 20° frictionless slope.…

A: Draw the free-body diagram of the mass.

Q: How much work does gravity do on the suitcase?

A:

Q: The loaded cab of an elevator has a mass of 2.70 × 10³ kg and moves 193. m up the shaft in 19.0 s at…

A:

Q: A 360 kg piano slides 2.6 m down a 24° incline and is kept from accelerating by a man who is pushing…

A: Draw the free-body diagram of the piano.

Q: Work 2. An 8.0kg box slides down a surface that is inclined at 53° below the horizontal at a…

A:

Q: x + b b An engineer has modeled the magnitude of the elastic force of a bungee cord using the…

A:

Q: 1. A 25.0 N applied force acts on a cart in the direction of the motion. The cart moves 13.0 m. How…

A: Given data:  Applied force (F) = 25.0 N Displacement in the direction of force (d) = 13.0 m…

Q: A 1400-N crate rests on the floor.     Part A How much work is required to move it at constant speed…

A: Given  Distance travelled is d=5.0  m Frictional force is f=310 N Acceleration of the crate is a=0…

Q: Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 2.2x10° N, one an…

A: Given: The force exerted by each tugboat is F = 2.2 x 106 N The force exerted at an angle in the…

Q: ▼ Part A with a force of 1.2 mN. W = What is the work done by the muscle fiber as it contracts to a…

A: Given F = 1.2 mN   = 1.2 × 10-3 N Muscle fiber contracts from 2 cm to 1.6 cm length∆ L = 2 cm - 1.6…

Q: A 45 kg skier starts from rest and skies down a hill that is angled at 17 degrees from horizontal.…

A: Work done is given as the dot product of force vector and displacement vector . Also according to…

Q: A box is raised at constant speed by a man pulling up on a rope. Assume that air resistance on the…

A: The man pulling the box with constant speed will exert 0 force on the box. That means the only force…

Q: Find the work done in the figure below. The magnitude of F= 50 N. The displacement is d= -3.0 m/ and…

A: To find the work done (W), you can use the formula:W=F⋅d⋅cos(θ)where:F = force vector,d…

Q: Part A Calculate the work done by gravity on the watermelon during its displacement from the roof to…

A:

Q: A block with mass m is released from rest at point A and slides down a curved slope to point B, then…

A:

Q: Part A How much work must you do to push a 10 kg block of steel across a steel table at a steady…

A:

Q: Determine whether the following statement is true or false and the reason your choice is correct. A…

A: Consider the variable x, where x=the length of the cable that has been pulled uptotal length of the…

Q: A cart for hauling ore out of a gold mine has a mass of 445 kg, including its load. The cart runs…

A:

Q: A 160 kg block is pulled at a constant speed of 1.3 m/s across a horizontal floor by an applied…

A:

Q: Part 1 A copper block with mass m = 100 g, is held at rest on a glass surface, where the plane…

A:

Q: A box of mass m = 6.0 kg (moving in the positive x-direction) has a velocity of 2 m/s at t = 0, and…

A:

Q: A 50 kg block is pulled up by a tensile force a 175 N and pushed up by a force F-200 N both applied…

A:

Q: A horizontal spring with spring constant 130 N/m is compressed 17 cm and used to launch a 2.5 kg box…

A: Spring constant Compressed distance Mass of the box Coefficient of kinetic friction on the surface

Q: 4. In a tug-of-war match, your team is slowly pulling the rope (and the other team) to your side. a.…

A: a. As your team applies a force and there is displacement ( as the other team moves toward your…

Q: Hooke's law describes an ideal spring. Many real springs are better described by the restoring force…

A:

Q: 2. Page 2 > of 7 F=40 30 In this problem, the block moves in the horizontal direction only. A. Find…

A:

Q: A 1500 kg car has a maximum power output of 140 hp. Part A How steep a hill can it climb at a…

A:

Q: Problem 9: The person in the diagram pushes a lawn mower a distance d, applying a constant force of…

A: Given:displacement is d in +x directionexternal force F at an angle θ below the +x axisconstant…

Q: Truck brakes can fail if they get too hot. In some mountainous areas, ramps of loose gravel are…

A: mass ,m = 15000 kgslope, coefficient of friction is   Initial speed , u = 38 m/s

Q: The force required to compress a non-standard spring as a function of displacement from equilibrium…

A:

Q: A force of constant magnitude pushes a box up a vertical surface as shown in the figure. The box…

A:

Q: A 160 kg block is pulled at a constant speed of 1.5 m/s across a horizontal floor by an applied…

A: The rate of doing work done by a force at a given instant is called instantaneous power of this…

Q: Sam, whose mass is 72 kg, straps on his skis and starts down a 64 m -high, 20° frictionless slope. A…

A: Given: Mass of Sam, m = 72 kg Height, h = 64 m Inclination of the slope, θ = 20⁰ Horizontal force, F…

Q: Which of the following is the correct way to calculate work? F is the magnitude of the Force and d…

A:

Q: <15.5 Problem Set: The Energy Model, Work and Kinetic Energy Item 10 10 of 10 I Review | Constants |…

A:

Q: A 1.77 kg book slides 1.25 m along a level surface. The coefficient of kinetic friction between book…

A: Kinetic frictional force is,

Q: pull u 0OX UIl a Fough surface which exerts a constant friction force fy= 40 N. What is the net…

A: Given: Force, F=110 N Friction force, fk=40 N

Q: 1. Find the work done in the figure below. The magnitude of F= 50 N. The displacement is d= -3.0 m/…

A:

Q: A 7.80-g bullet moving at 520 m/s penetrates a tree trunk to a depth of 6.30 cm. Answer parts a-b.

A:

Q: Write the expression for the work done by a constant force F applied at an angle q with respect to…

A:

Q: A crate with mass m = 33.3 kg being pushed up an incline that makes an angle φ = 22.7 degrees with…

A: Free body diagram :