A 10 kg box is pulled along the x axis on a non-uniform rough surface by a force of 100 N which makes 60 degrees angle above the horizontal. The frictional force changes linearly as kx along the x-axis where k=0.5 N/m. Starting the motion from the origin, what is the rate of energy consumption (in units of W) by the frictional force at x-10 m ? Take g=10m/s?. O A) 48.7 O B) 11.2 O C) 65.6 O D) 50 E ) 64.6

Q: 10kg block is released from a vertical height of 10000 mm. to begin sliding down a frictionless 300…

A: Dear student When there is no external force acting on system, the energy remains conserved. Also…

Q: A block is dragged over a horizontal surface by an 80 N force acting 25° above the horizontal. The…

A:

Q: A 7.80-g bullet moving at 690 m/s penetrates a tree trunk to a depth of 6.20 cm. (a) Use work and…

A: Mass of bullet (mb)=7.8 g Initial speed of the bullet (u)=690 m/s Penetration in trunk (d)=6.2 cm

Q: A72-kg skateboarder grinds down a hubba ledge that is 3.0 m long and inclined at 22° below the…

A: Mass of the skateboarder, m=72 kg Length of the ledge, l=3 m Inclination angle of the ledge, θ=220…

Q: in the thermal energy of the block-foo

A: Given: Mass of block is 2.6 Kg Spring constant is 660 N/m Distance, D=7.9 m Kinetic friction…

Q: Which point/s is/are the state of the system?

A: In thermodynamics , the state of system is represented by specifying its pressure , volume and…

Q: A 32.5 kg box initially at rest is pushed 4.75 m along a rough, horizontal floor with a constant…

A: Solution:-Given thatmass of box(m)=32.5 kgdisplacement (s)=4.75 mConstant applied force (F)=145…

Q: Calculate the ratioof the mechanical energy at B and mechanical energy at A (EB/EA) and (EC/EB).…

A: Given data: Mechanical energy: EA=EB=EC=3000 J

Q: This time, the pendulum is 1.07 m long and has a mass of 4.92 kg. You give it a push away from…

A: length (L) = 1.07 m mass (m) = 4.92 kg initial speed = 2.88 msenergy lost = 1 J

Q: The basis of muscle action is the power stroke of the myosin protein pulling on an actin filament.…

A: Given:  displacement, S = 10 nm = 10 × 10-9 m = 10-8 m  force, F = 1.0 pN = 10-12 N Energy input, E…

Q: A child whose weight is 290 N slides down a 4.6 m playground slide that makes an angle of 45 with…

A:

Q: a. 11 m b. t/3 C. tV2 d. tV6 e. 13 m

A:

Q: A 74.8-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then…

A:

Q: A typical automobile engine has an efficiency of 25%. Suppose that the engine of a 1000-kg…

A: We know a typical automobile engine has an efficiency of 25 %. we have to find the maximum grade…

Q: A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.44 m/s. The pulling…

A:

Q: A 10kg block slides from rest down a plane inclined 30 deg with the horizontal. Assuming a…

A: Given: The mass of the object is 10 kg. The angle of the inclination is 30o. The coefficient of…

Q: A 10 cm-long spring is attached to the ceiling. When a 1.7 kg mass is hung from it, the spring…

A: Mass of the object, Natural length of spring  = 10 cm length of spring after stretch = 16 cm

Q: A horizontal force of magnitude 33.8 N pushes a block of mass 4.01 kg across a floor where the…

A: Given: The given values are, The horizontal force of magnitude is F=33.8 N. And the mass value is,…

Q: A golf ball is dropped from a 50 meter tall building. These suckers are quite bouncy... but not…

A:

Q: When jogging at 13 km/h on a level surface, a 70-kg man uses energy at a rate of approximately 850…

A: Given that:-Speed, v=13 km/h=13×10003600=3.6 m/sMass, m=70 kgEnergy at a rate, Pe=850 WattHuman…

Q: a.Ladders must be positioned at a safe angle to avoid potential fall hazards when climbing. An ideal…

A: When a ladder is leaned against a wall, the bottom of the ladder should be one fourth of the…

Q: coefficient of kinetic friction 1s 0.4, and the crate is pulled 5.0 m. (a) How much work is done by…

A: Given: Mass of crate, m=10.0Kg  Initial speed, vi=1.5m/s Pulling force, F=100N Inclined angle with…

Q: The loaded cab of an elevator has a mass of 3.60 × 103 kg and moves 220. m up the shaft in 20.0 s at…

A: Given Mass = m = 3.60 × 103 kg Distance moved = s = 220 m We have to calculate rate of work done on…

Q: You set your stationary bike on a high 80-NN friction-like resistive force and cycle for 30 minmin…

A:

Q: A book of mass 6 kg is sliding along a level table with an initial speed of 3.1 m/s. The coefficient…

A:

Q: A 35.5 kg box initially at rest is pushed 5.75 m along a rough, horizontal floor with a constant…

A: Given: Mass of the box, m = 35.5 kg Distance pushed by force, k = 5.75 m Horizontal force, = 130 N…

Q: In the figure, a 2.6 kg block is accelerated from rest by a compressed spring of spring constant 660…

A: Given: Accelerated (g) = 2.6 kg Kinetic friction (Mk) = 0.272 Distance (d) = 7.9 m

Q: he work envelope tra e following restri

A: The tracing out of the figure is given as,

Q: A 55 kg child is swinging on a swing with length 4.0 m. When the child stops at the top of its…

A:

Q: Energy

A: Definition of Conservation of Energy : - Total energy is constant in any process. It may change in…

Q: X-a35 m k-290 N/m ww h 12 m 1. Calculate the box's initial amount of elastic potential energy.17.76

A: Given data: Mass of box, M=15 kg. Spring constant, k=290 N/m. Height where box is kept, h=12 m.…

Q: A 35.5 kg box initially at rest is pushed 5.75 m along a rough, horizontal floor with a constant…

A: Recall W=Fdcosθ When θ=900 W=0 Also work kinetic energy theorem ∑W=∆KE

Q: A 2.25 kg block is placed at position A on the 4.10 m track. path CD of the track are frictionless,…

A: Given:- The block of the mass = 2.25 kg is at the rest position on A   Length of track AB is LAB =…

Q: KE₁ O yes V₁ A 55.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m-high rise as shown…

A:

Q: A 7.80-g bullet moving at 690 m/s penetrates a tree trunk to a depth of 5.10 cm. (a) Use work and…

A: Given : Mass of a bullet (m) = 7.80 g = 0.0078 kg Initial speed (vi) = 690 m/s Final speed (vf) = 0…