A student whose mass is 55 kg climbs stairs from the fırst to the third floor of the physics building, a vertical distance of 10 m. What minimum work did she do? 1500 J O 2600 J O 1980 J O 4230 J 5390 J

Q: How much work do the breaks on a 3200 kg car need to do in order to slow it from 30 m/s to 20 m/s?

A: Given mass m=3200Kg V1=30m/s V2 = 20m/s According to work energy theorem work done by the car is…

Q: A 2.5 kg bowling ball is tied to a 1m long string attached to the ceiling. The ceiling is 5 m above…

A: W=FScosθ Here  W=2.5×9.8×4=98J

Q: A sailor pulls her boat along a dock using a rope at an angle of 25° with the horizontal. How much…

A: Note: As per the guidelines, we can only answer first question of multiple question. Sorry for the…

Q: The students is given 130 cm long ideal spring whose unstretched position is at x=0.00 cm. A student…

A: Spring constant, k=41.1 N/m xi=22.2 cm = 0.222 m xf=30.5 cm =0.305 m

Q: A 1.3 kgkg book is lying on a 0.80 mm -high table. You pick it up and place it on a bookshelf 2.2 mm…

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Q: When released, a 100-g block slides down the path shown below, reaching the bottom with a speed of…

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Q: An object having a mass of 0.79 kg falls from a height of 5272 m to 447.7 m. Calculate the work done…

A: Given :      mass of the object, m = 0.79 kg      Initial height , h1 = 5272 m      Final height, h2…

Q: 75.0kg firefighter climbs a flight of stairs 28.0 m high. How Much work does he do?

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Q: Find the work done in joules by gravity as an object of the mass m=11 kg is raised up at constant…

A: Potential energy is defined as U=mgh Here m is mass, h is height and g is gravitational acceleration…

Q: A force F = 7.3 Ni – 4.5 Nĵ acts on an object. While this force acts, the has a displacement 7 = 1.5…

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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: What is the work done by the moving force in Joules

A: Mass, m=7Kg Velocity, v=20m/s Height, h=8.75m

Q: Can the normal force on an object ever do work? yes no

A: Yes sometimes Normal force also do works on an object.

Q: Andy carries a sack of rice on his shoulder by applying a 250N force. Andy moves 8 m horizontally,…

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Q: A 8.0kg box slides down a 2.0m long surface that is inclined at 53° below the horizontal. The…

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

A: Force applied when block moved to x = 5 cm is Fapp = 360 N Distance the block moved  x = 5 cm = 5 x…

Q: An 80-N crate slides with constant speed a distance of 5.0 m downward along a rough slope that makes…

A: Given that---- force F = 80 N. Distance travel d = 5 m. Angle = 35°. Question ❓ work done by…

Q: You pick up a 1 N box 1.5 m upwards and walk with it 10 meters across the room, after which you…

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Q: When released from rest, a 170 g block slides down the path shown below, reaching the bottom with a…

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Q: A 1400 kg car accelerates from 5 m/s to 10 m/s. The net work done by the car is VI V2 500 kJ 200 kJ…

A: Given: The mass (m) of the car is 1400 Kg. The initial velocity (u) of the car is 5 m/s. The final…

Q: A physics student shoves a 5-kg block from the bottom of a frictionless 30.0° inclined plane. The…

A: Given: Mass of block, m=5 kg Angle made with horizontal, θ=30° Work, W=4 J Diagram:   Formula:…

Q: Find the work done in joules by gravity as an object of the mass m=8 kg is raised up at constant…

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Q: an 8 kg block is released from rest with v1= 0m/s. The block moves down a distance of 1.6 meters on…

A: mass = 8 kg initial speed = 0 m/s distance along the incline = 1.6 m angle of incline = 40 degree…

Q: A student slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at…

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Q: If gravity is pulling a 0.15 kg ball down 2.0 meters, what is the magnitude of the force doing work…

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Q: A force of 25.0 N is exerted upwards on an object to lift it a distance of 3.20 m. What is the total…

A: work is component  of the applied force is in direction of displacement .   in this question  we…

Q: 1.14 kg bucket is pulled at a constant velocity straight up a 5 m well. How much work does the…

A: Mass of bucket = 1.14 kg  Velocity = constant It means acceleration is zero. It is only possible…

Q: What is the potential energy of an acorn falling out of a tree 20 meters above the ground that has a…

A: Given value--- height = 20 m. weight of acorn = 23.7 N. We have to find--- potential energy?

Q: A boy is carrying a bucket of water of mass 3810 grams. If he does 16.5 J of work, to what height…

A: Given data:  Mass (m) = 3810 g = 3.810 kg Work done (W) = 16.5 J Required: Height (h)

Q: You go for a walk one afternoon down a level street to a park where there is a hill.  If the hill is…

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Q: A car of mass 500kg is moving at 10m/s. The engine does work on the car and the speed increases to…

A: SOlution: given that m = 500 kg v1 =10 m/s v2 = 16 m/s

Q: A crate that has a mass of 20 kg is raised 10 meters above the ground. How much potential point…

A: Potential energy comes due to height only. Its value is given by  P.E.- mgh  m - mass of the object…

Q: Find the work done by a force F = 1.80 î+2.20 ↑ N as it acts on an object moving from the origin to…

A: Given that:- Force=1.8 i^+ 2.2 j^

Q: An object whose mass is 2.00 kg is lifted upward a distance of 3.55 m against the pull of gravity on…

A: Given: The mass of the object is 2 kg. The height of the object is 3.55 m. The acceleration due to…

Q: A certain spring whose normal length is 42 cm is stretched 6.3 cm by a force of 18 N. How much work…

A: Given Data: The normal length is, L =42 cm. The stretch is, x = 6.3 cm. The force required is, F =…

Q: A 70 kg person climbs a 2.0 m high flight of stairs within 8 seconds when he walks and 2 seconds…

A: Given data: Mass (m) = 70 kg Height (h) = 2.0 m Time taken in walks = 8 seconds Time taken in runs…

Q: A 700-kg car accelerates uniformly from 3 m/s to 8 m/s. The work done on the car (in kJ) is: O a…

A: Given:-  mass of car = 700 Kg vi = 3m/s vf = 8m/s g= 9.8 m/s2

Q: A 30-N box is pulled upward 6.0 m along the surface of a ramp that rises at 30° above the…

A: weight = mg = 30 Nd = 6 m θ = 30oWork done by pulling force along the incline = force applied * d =…

Q: How much work is done against gravity to move an 800 kg weather monitor 300 km into the air? (re =…

A: mass (m) = 800 kg distance (d) = 300 km in air radius of earth = 6.38×106 m mass of earth =…

Q: A spring with a spring constant of 11 N/m is stretched from equilibrium to 2.9 m. How much work is…

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Q: An 72-kilogram cliff diver is standing on a cliff that is 25 meters high. What is his potential…

A: Solution

Q: A force (-4i+2)N moves an object from the point P (1, 3) m to the point Q (3, 8) m. The work (in J)…

A: Given data: Force F=(-4i+2j)N Point P=(1,3)m Point Q=(3,8)m

Q: A 1.5 m high person is holding a 20 kg trunk on his head and is standing at a roadways bus-terminal.…

A: Work Done is calculated by the formula :   W = Force x Displacement                    ......(1)

Q: A particle moves 5 m in the +x direction while being acted upon by a constant force F = 2i + 5j - k…

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Q: If gravity is pulling a 0.15 kg ball down 2.0 meters, what is the magnitude of the force doing work…

A: Given: The mass is 0.15 kg. The distance covered is 2.0 m.

Q: Find the work done in joules by gravity as an object of the mass m 5 kg is raised up at constant…

A: Mass of object m = 5 kg Initial height h1 = 26 m Final height h2 = 69 m g = 10 m/s²

Q: A force of 100N stretches a spring one meter beyond its natural length. How much work does it take…

A: When a force is applied to a spring, then it will be stretched according to the amount of force…

Q: How much work is required to stretch a spring from x-4.5 cm to x-8.2 cm given a spring constant of…

A: