As a mass tied to the end of a stringswings from its highest point down to its lowest point, it isacted on by three forces: gravity, tension, and air resistance.Which force does (a) positive work? (b) negative work?(c) zero work?

Q: A poor guy pulls a 10-kg luggage along a level boulevard for 5 m by exerting a force of 35N at an…

A: Given data: Mass of luggage is, m=10 kg. Distance travelled is, s=5 m. Magnitude of force is, F=35…

Q: 2. A boy pushes on a pig with a force F = 490 i + 230j N, giving the pig a displacement d = 1.77i+…

A: Given-   Force F=490 i+230 j NDisplacement d=1.77i+1.90j m

Q: A crane lifts a 650-kg beam vertically upward 23.0 m and then swings it horizontally a distance of…

A: Given: The mass of the beam is 650 kg. The vertical displacement of the beam is 23 m. The horizontal…

Q: A crane lifts a 650 kg beam vertically upward 9.6 m and then swings it westward 18 m. How much work…

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Q: An object moving along the x axis is acted upon by a force F, that varies wit. position as shown.…

A: The work done by the force will be equal to the area under the graph. The area under the graph is…

Q: The work done by a force that varies in magnitude can be obtained from which of the following…

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Q: In the figure, a constant force Fa of magnitude 83.0 N is applied to a 3.0 kg shoe box at angle o =…

A: Given data F=83 Nϕ=530h=0.35

Q: A 25 kg sack of rice is lifted 1.25 m above the floor for 50 sec. The rate at which work is done on…

A: Given Data: mass (m) = 25 Kg Height (h) = 1.25 m Time (t) = 50 s

Q: A mass of 8 kg is traveling at a constant 10.8 m/s when a 39 N force, F, starts to act in the…

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Q: Is it possible to increase the kinetic energy without the application of external force?

A: yes the kinetic energy will increase without applying any external force. for example, when we kept…

Q: A crane lifts a 650 kg beam vertically upward 10.8 m and then swings it westward 18 m. How much work…

A: The formula for workdone is W=Fxcosθ

Q: Cite an example in which a force is exerted on an object without doing work on the object.

A: The work done will be zero when the applied force on an object is perpendicular to the displacement…

Q: Find the work done by 45N force in pulling the suitcase at an angle of 50d egrees with respect to…

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Q: A constant force of 40N in the positive x direction acts on a 4.0-kg object as it moves from the…

A: We are given that A constant Force of 40N  acting along positive x-axis acts on a 4.0kg object as it…

Q: A gardener pushes a lawn roller through a distance of 20 m. If he applies a force of 196 N in a…

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Q: In the figure shown, if the mass (m=10 Kg) is moving with constant speed and traveled a distance…

A: Given mass = 10 kg  Moving with constant velocity i.e acceleration is zero  Distance traveled 13 m…

Q: As an object moves from point A to point B only two forces act on it: one force is nonconservative…

A: The work done by non-conservative is responsible for the mechanical energy of system. When work done…

Q: A big man is towing a large box with a cord that makes an angle of 25 degreeswith the horizontal.The…

A: Force applied on box = 100 N displacement of box = 2 meter angle between force and displacement…

Q: One species of Darwin’s finch, Geospiza magnirostris, can exert a force of 217 N with its beakas it…

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Q: Suppose you drag a box 8.0 m across a horizontal floor, exerting a force of 90. N at 35 degrees…

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Q: If you walk 2.0 m horizontally forward at a constant velocity carrying a 20-N object, what is the…

A: Given Data : The distance travelled horizontally is given as d = 2 m The weight of the object is…

Q: O (S): A 50-N force is the only force on a 2-kg object that starts from rest. When the force has…

A: Given: Force = 50 N Mass of the object =2 kg Distance =2 m v0=0 General equation of motion: v2= v02…

Q: A mass of 47 kg is moving horizontally as a force of 190 N, directed at 25° below the horizontal, is…

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Q: How much work is done by the boy pulling his sister 30.0 m in a wagon as shown? Assume no friction…

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Q: An 0.5 kg object is initially located at a height 2.5 m was kicked vertically upward to a height of…

A: The work done is given by  W = F s cos A  where, F is the force, s is the displacement and A is the…

Q: A 5 N force, parallel to an incline's surface, pushes a crate 5 m up the 15º incline at a constant…

A: The force acting parallel to the incline surface is F = 5 N. The angle of inclination of the…

Q: "A 4.00-kg box of fruit slides 8.0 m down a ramp, inclined at 30.0e from the horizontal. If the box…

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Q: Calculate the average power necessary for a 55.8 kg person to run up a 5.0 m high, sloped hill, in…

A: The expression for the average power is P=Wt Here,P  is the average power,  iWs the work done by…

Q: A baseball of mass 350 g is hit at home plate with a speed of 50 m/s. When it lands in a seat in the…

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Q: A force of 17 Ib is required to hold a spring stretched 3 in. beyond its natural length. How much…

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Q: While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute, displacing…

A: Given:- While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute…

Q: .How much work is required to move an object from x=2 to x=4 (measured in merters) in presence of…

A: Given:  F(x) = 4 / x2 from x = 2 m to x = 4 m

Q: Spiderman, whose mass is 80.0 kg, is dangling on the free end of a 12.0-m-long rope, the other end…

A: Mas, m = 80 kg  Length of rope, l = 12 m

Q: • A 1300-kg elevator is lifted at a constant speed of 1.3 m>s througha height of 22 m. How much…

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Q: Please show me how to work this. Don't round any figures please.

A: The work done can be calculated using following steps:Given:

Q: A man pushes an 46-N crate a distance of 62 m upward along a frictionless slope that makes an angle…

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Q: In the figure shown, if the mass (m=8 Kg) is moving with constant speed and traveled a distance d=18…

A: We know that work done  W = force ×displacement

Q: Find the work done in joules by gravity as an object of the mass m=7 kg is raised up at constant…

A: The mass of the object is 7 kg.  The initial height is 40 m.  The final height is 67 m.  The work…

Q: In the figure, a constant external force P = 160 N is applied to a 20.0-kg box, which is on a rough…

A: The total work done is, Wnet=12mvf2-12mvi2Wnet=12mvf2-12vi2Wnet=1220.0 kg2.60 m/s2-0.500…

Q: A crane lifts a 650 kg beam vertically upward 10.1 m and then swings it westward 18 m. How much work…

A: Here the workdone is only in upward direction. No workdone in horizontal direction.

Q: A 10 kg block is pushed with a constant external force of 10 Newtons horizontally on a floor with a…

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Q: A bag of wheat weight 430 kg. To what height should it be raised so that potential energy is 9150 J…

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Q: A particie moves 5m in the positive x direction while being acted upon by a constant force F= 4i +…

A: Work is defined as  W=∫F→·dS→ Here F→ is force and S→ is displacement.