What is the work done by the force of gravity Fg ? 30 A. F dcos(0) B. F dcos(90) C. F dcos(180") D. F dcos(270) M.

Q: 1. A student of mass 40 kg caries a bag weighing 5000g from the ground floor to his class on the…

A: Work done by boy W= mgh Given that m= 5kg  h= 0.7m

Q: power mower does 8 x 104 J of work in 0.4 h. What power does it use

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Q: 7. A 90.0 kg man pushes on a 5.0 x 106 ton wall for 350 s but it does not move. How much work does…

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Q: What is the work done by the force FD ? A. F,dcos(0°) B. F,dcos(60) C.F,dcos(90°) D. F,dcos(120) M.

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Q: In the diagram, the angle of the incline is 0 = 28°. Although a 27_N horizontal force is applied to…

A: Introduction: Force is the vector quantity. Fundamentally it can be represented as, product of mass…

Q: A large hoist is lifting a 2000 kg automobile. There is a gauge on the hoist that displays its power…

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Q: 1903 kg car travels at a speed of 11.7 m/s. what is its kinetic energy? answer in J units

A: Given Data: The mass of the car is, m = 1903 kg. The velocity of the car is, v = 11.7 m/s. The…

Q: 500 joules of work was done in 10 seconds, the power used was A. 0.025 watts B. 0.025 N C. 40 N D.…

A: Given value--- work = 500 J. time = 10 sec. We need to find--- Power ?

Q: How much work (in J) is done by gravity when dead lifting a 100.0 kg barbell 93.26 cm from the floor…

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Q: 11. Airflow lifts a 3.6 kg bird 50 m up. How much work was done by the flow?

A: We know that, Law of conservation of energy states that energy can neither be created nor…

Q: 11. You take a ride in a wagon. The wagon’s mass (including you) is 200 kg. A horse pulls it with a…

A: Total mass, m=200 kg Pulling force by the horse, F= 78.9 N Speed of the mass, v=3.7 m/s Displacement…

Q: Calculate the force needed to do 500 J of work while pulling a cart a distance of 3.4 m.

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Q: You carry a 20. N bag of potatoes up a 5.0 m flight of stairs in 26 seconds. How much work was done?…

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Q: Needs Complete solution with 100 % accuracy.  Don't use chat gpt or ai.     Plz plz plz.

A: Step 1: here we have calculate the output power Step 2: here we have calculate the input power Step…

Q: 6. A constant horizontal force of magnitude 2.00 [N] is exerted in pushing a box a distance = 13.0…

A: Given: The magnitude of the horizontal force is 2 N. The displacement of the object is 13 m along…

Q: SI unit of power is the Watt (W).

A: This question is based on Unit dimensions .

Q: 10. A force of 2i+3j+2kN acts on a body for 4s and produces a displacement of 3i+4j+5k m. Calculate…

A: The expression for power is, P=Wt          (I)                 W=work done,t=time The work done by…

Q: A chain 35.9 m long and weighing 47.5 N/m hangs from a drum on which it is to be wound. Determine…

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Q: 3. A record was set for stair climbing when a man ran up the 2500 steps of the Empire State Building…

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Q: Find the spring constant k for a spring if a force of 19 N stretches the spring 0.46_m.

A: Given data:  Force (F) = 19 N Stretch in Spring (x) = 0.46 m Required: The spring constant (k)

Q: How much work is it to lift a 25 kg sack of cement vertically 4.3 m?

A: Given , Mass of sack of cement (m)= 25 kg  Sack of cement lifted vertically h= 4.3 m

Q: 11. You push down on a 4.0 N box against the floor for 2 minutes. How much work was done? How much…

A: The force applied, F=4 N The time for which the force is applied, t=2 min

Q: QUESTION 7 This problem is concerned with the same situation as the previous problem. A piece of…

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Q: 10. A tow truck pulls a car by a cable that makes an angle of 30° to the horizontal. The force…

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Q: A person does 400 J of work in 5 sec. Power of the person is calculated tto be ? Choose one correct…

A: Given, Work done by the person W = 400 J Time t = 5 sec We know the expression for power  P=Wt

Q: 1. How much work is required for a mechanical hoist to lift a 9000. N automobile to a height of…

A: Given:-weight of automobile m×g= 9000N         Height to which it is lifted H = 1.800 m