One of the events in a strength competition is to pull a cement block 100 feet. One competitor pulls the block by exerting a constant force of 245 pounds on a rope attached to the block at an angle of 30° with the horizontal (see figure). Determine the work done in pulling the block. (Round your answer to two decimal places.) ft-lb 30° -100 ft Not drawn to scale

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A:

Q: nt suspends a 0.25-kg mass on a spring, which stretches a distance of 5.0cm. The student then…

A: Given :-  mass m = 0.25 kg  The strehed distance is x = 5 cm  The student then removes the mass and…

Q: Three forces, F1 = 20.0 N, F2 = 40.0 N, and F3 = 100000.0 N act on an object with a mass of 2.00 kg…

A:

Q: A one-dimensional variable force in the x-direction is given as F(x) = 2 x 3.15; where F is in…

A:

Q: During a move, you and two friends decide to move a heavy dresser. You pull the dresser to the right…

A: Given: The value of force F1 is 4.93 N. The value of force F2 is 3.27 N. The value of force F3 is…

Q: A 5.2 kg box has an acceleration of 2.1 m/s2 when it is pulled by a horizontal force across a…

A: Since you have asked multiple part question, so we will answer the first three parts for you.…

Q: Johnny used his super muscle power to pull a box initially at rest, up an inclined plane. The…

A: angle of incline (θ) = 35oforce (F) = 250 N mass (m) = 25 kg coefficient of kinetic friction =…

Q: A one-dimensional variable force in the x-direction is given as F(x) = 2 x 2.4i where Fis in newtons…

A: Mass of the object is m = 2.5 kg Initial speed of the particle is vi =3 m/s Force acting on the…

Q: Calculate the work done by an applied force of 70.0 N on a crate for the following. (Include the…

A:

Q: To bring his coconuts to the market, a distance of 15.0 m from where he is, a vendor pushes his cart…

A:

Q: 4.0 kg starts at rest from the top of a rough inclined plane of height 10 m as shown in the figure.…

A: Givenm=4 kgh=10 mv=10 m/s

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A: Given: The mass of the toy is 15 kg. The tension in the string is 58 N and the direction is 30o with…

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A: work done by a force, W=∫12F.ds=∫12F×cos(θ)×ds where  θ is angle between force F and displacement ds…

Q: Calculate the work done by an applied force of 71.0 N on a crate for the following. (Include the…

A: applied force = 71 N a) horizontal component of the force = 71 N distance moved = 5.7 m work done =…

Q: A 380-kg piano slides 2.9 m down a 25° incline and is kept from accelerating by a man who is pushing…

A:

Q: Joey pushes a box with a 5-N force and moves it 6 meters horizontally. For which scenario does he do…

A: Required : Scenario for maximum work.

Q: F (N) 5.0 • x (m) 10 0. 5.0

A:

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A: work done by any force is defined as work Donr by  any force F is equal to dot product of force…

Q: An object of mass = 2 kg is pulled by a constant force F = 4 N for a horizontal distance of 2 m.…

A: Given data : Mass=m Force=F Angle with horizontal=θ   Find : Work done

Q: A force acting in the x direction on an object varies with x as shown in fig. below. Find the work…

A: Consider the following diagram,

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A: Given: The mass of the toy is 15 kg. The displacement of the object is 6 m in the horizontal…

Q: A carpet which is 6 meters long is completely rolled up. When xx meters have been unrolled, the…

A:

Q: Calculate the work done by an applied force of 74.5 N on a crate for the following. (Include the…

A: We know that work done by a force is  W= Fd cosθ

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

A: Given:Weight of the crate = 1400 N

Q: To push a crate of mass 100 kg up a frictionless ramp with an angle of 15 ° to the horizontal, a…

A:

Q: ce in the rope is 58.0 N and the angle is 30° with respect to the horizontal. The frictional force…

A: GivenMass of boxm=15 kgDistance covered, d=6 mTension Force, T=58 NAngle, θ=30° Frictional force on…

Q: What is the work done by gravity when a 4.5 kg object is moved from start to finish point as shown…

A: Given data:  Mass (m) = 4.5 kg g = 10 m/s2

Q: A block of mass m = 5.00kg is released from point A and slides on the frictionless track shown in…

A:

Q: mike used his super muscle power to pull a box initially at rest, up an inclined plane. The inclined…

A: Given Mass of the box is m=25.0 kg Acceleration due to gravity is g=9.81 m/s2 Distance travelled is…

Q: How much work did the movers do (horizontally) pushing a 46.0-kg crate 10.6 m across a rough floor…

A: Given- Mass of crate (m) = 46 Kg Distance (d) = 10.6 m Coefficient of friction (μ) = 0.50

Q: Lamar Gant, U.S. powerlifting star, became the first man to deadlift five times his own body weight…

A: Given,

Q: The two ropes seen in the figure are used to lower a 255 kg piano exactly 6 m from a second-story…

A: From the given diagram of the system, As weight of the piano, W = 2500 N Tension, T1 =1295 N…

Q: A sled with mass 12.00 kg moves in a straight line on a frictionless, horizontal surface. At one…

A: Given data: Mass of sled, m=12 kg Velocity at one point, v1=4 m/s Velocity at final point, v2=6 m/s…

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A: As we know work=force * distance. friction force=18N distance=6m

Q: f his toys of mass 15.0 kg along a rough horizontal surface for a distance of 6.00 m. The tension…

A: Given:- the mass of the box is m= 15 kg  The angle at which the force is applied is 30 degree  The…

Q: Directions: Use the work formula, Work = Force x Distance, to complete the following problems.…

A: we know that work done  W=Force *distance

Q: The equation F = (6x5 + -7x4 + -5) describes the force applied on a 8.02 - kg particle, where F is…

A: Given, Force=6x⁵-7x⁴-5 We have to find the workdone.

Q: A 12-pack of Omni-Cola (mass 4.30 kg) is initially at rest on a horizontal floor. It is then pushed…

A: The work done by dog must be equal to kinetic energy of mass given.  Work done is given by,  W=Fd…

Q: A 950 N skydiver jumps from an altitude of 3000 m. What is the total work performed on the skydiver?…

A: SOlution:

Q: Three forces, F1 = 20.0 N, F2 = 40.0 N, and F3 = 10.0 N act on an object with a mass of 2.00 kg…

A:

Q: You throw a 20-N rock vertically into the air from ground level. You observe that when it is 15.0 m…

A:

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A: Given: The mass of the object is 15 kg. The displacement of the object in the horizontal direction…

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A:

Q: QUESTION 1 A worker pulls a 50 kg storage box at an angle of 37° with the horizontal floor by a…

A: The given values with suitable variables are listed below. Here, m denotes the crate’s mass, d…

Q: A constant force of 8 N is applied to a block that slides without friction on a horizontal surface.…

A:

Q: Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of…

A:

Q: Matthew pushes a box of toys along a 5 m long ramp that is inclined 3 m high as shown in the figure…

A: M= 20kg  L= 5m  h= 3m

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.