A physics professor tries to barricade himself in his office by pushing a 30 kg desk in front of the door. Unfortunately, he failed to realize that the door opens outward. If the professor had pushed down on the desk with a force of 45 N at an angle that was 30° with respect to the horizontal, then how much work did he do to move the desk 20 cm?

Q: A father is pulling his  son on a sledge with a 120 N force at an angle of 45 degrees with the…

A: Given Amount of force is F=120 N Angle  is θ=45 degrees with the horizontal Work done is W=400 J

Q: A 3.75-kg crate starting at rest slides down a rough 6.20-m-long ramp, inclined at 35.0° below the…

A:

Q: The diagram shows a crate with mass m = 38.2 kg being pushed up an incline that makes an angle φ =…

A:

Q: A tow truck pulls a car 5.00 km along a horizontal roadway using a cable having a tension of 850 N.…

A: Given data: Displacement, d=5.00 km = 5.00×103 m Tension force in the cable, FT=850 N

Q: You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 640…

A: Given data- weight of you W=640 N weight of belongings W=910 N displacement d=15.2 m

Q: Spiderman, whose mass is 78.0 kg, is dangling on the free end of a 12.6-m-long rope, the other end…

A: Given:-           Mass of Spiderman(m) = 78 kg          Length of rope(l) = 12.6 m         Angle(θ)…

Q: An elevator with its occupants has a total mass of 1425. kg. The cable that allows the elevator to…

A: If an elevator with occupants of mass 'm' moving downward with acceleration 'a' then…

Q: A crate with mass m = 24 kg is being pushed up an incline that makes an angle φ = 18.7 degrees with…

A: Givenmass, m=24 kgangle, ϕ=18.7 degforce, P=460 Ncrate start from restfinal speed, v=4.8…

Q: A shopper in a supermarket pushes a cart with a force of 45 N directed at an angle of 25° below the…

A: Given values: Applied force, F=45 N Angle below the horizontal, θ=25° Length of the aisle, d=45.0 m

Q: A college student earning some summer money pushes a lawn mower on a level lawn with a constant…

A: Solution:-

Q: A force acting on an object moving along the x axis is given by Fₓ= (14ₓ-3ₓ²)N where x is in M.…

A: The force acting on an object moving along the x-axis is given as,

Q: A dock worker pushes a m = 3.40 kg box a distanced = 3.00 m along the floor by a constant force of…

A: a) The work done by the applied force on the box is: W1 = →F.→d      = F×d×cosθ      = 16×3×cos27°…

Q: Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 2.2×106 N, one an…

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Q: A dockworker pushes a box along a horizontal floor and moves a distance of 4.6 m with a force F…

A:

Q: Using a cable with a tension of 1350 N, a tow truck pulls a car 5.00 km along a horizontal roadway.…

A: Formula of work-done is as follows; W=Fdcosθ…

Q: The graph shows the x component of a force that acts on an object that moves on the x axis. The…

A:

Q: A tow truck pulls a car 5.00 km along a horizontal roadway using a cable having a tension of 850 N.…

A: Tension T = 850 N Displacement X = 5.00 km = 5000 m  We need to determine the work done.

Q: You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 640…

A:

Q: A child on a sled is initially at rest on an icy horizontal surface. The sled is pushed until it…

A:

Q: A person pulls a 10 kg luggage along a level road for 5 m by exerting a force of 20 N at an angle of…

A: Given Data : Mass of luggage, m= 10 Kg                      Force= 20N                      Vertical…

Q: A spring and block are in the arrangement of the figure. When the block is pulled out to x = +5.0…

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Q: Sheila has just arrived at the airport and is dragging her suitcase to the luggage check-in desk.…

A: Given : force, f = 190 N Angle,  θ = 35° Displacement, d = 45 m

Q: che crate and the ground)

A:

Q: A 128 kg crate slides down a ramp, starting from rest. The ramp is inclined at an angle of 24.2…

A:

Q: A 1.9 kg book is lying on a 0.75m high table. You pick it up and place it on a bookshelf 2.1 m above…

A:

Q: A particle of mass 2.0 kg moves under the influence of the force F(x) = (-5x² = 7x) N. Suppose a…

A: We must ascertain the amount of work the frictional force does.

Q: A tractor tows a plane from its airport gate, doing 8.8 MJ of work. The link from the plane to the…

A:

Q: During a tug-of-war, team A pulls on team B by applying a force of 1150 N to the rope between them.…

A: Approach to solving the question:Please see attached photo for detailed solutions. Thank…

Q: A 130 kg crate slides down a ramp, starting from rest. The ramp is inclined at an angle of 27.8…

A: Given : Mass of crate = 130 kg             Angle  = 27∘             Coefficient of kinetic friction…

Q: An archer stands on a cliff with his bow 32.5 meters above a valley and fires an arrow with a mass…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: A worker pushes a 40.5 kg box up a ramp which makes an angle of 22.5° relative to the horizontal.…

A: (a) Work done by a force is given as  W = F.d Where F is force and d is displacement W = Fdcosθ From…

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…