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: The work performed as a function of time for a certain process is given by: W = at³, where a = 2…
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Q: 3. A horizontal force of 5.0 N is used to push a box up a ramp 5.0 m long that is at an angle of 15°…
A: Answer: Given, Horizontal force, F=5N Length of ramp, d=5m Angle above the horizontal, theta = 15°…
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: The work done by a force is zero when the force is to the displacement.
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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: A body of mass 30 kg is at rest. A force of 5 N is applied on it. Calculate the work done in first…
A: According to Newton's 2nd law, the force will create an acceleration in the body. The acceleration…
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: One watt-hour is equivalent to: A. 6.3 x 103 J B. 6.3 x 10-7 J C. 3.6 x 103 J D. 3.6 x 10-3 J
A: Watt is the unit of power, and hour is the unit of time. Since power is the ratio of energy and…
Q: A cable pulls an 267 kg safe up a slope inclined at 19 °, for 20 m on an very slippery oily surface.…
A: a) The normal force acting on a safe will be perpendicular to the inclined surface and the safe will…
Q: 2. A 1200 kg car is moving at 30 m/s and speeds up to 35 m/s. Find the work done on the car.
A: According to the work energy theorem, the work done is equal to the change in Kinetic energy,…
Q: An elevator weighs 3600 N and must be lifted at a constant speed a vertical distance of 2.5 m in…
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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: Given the ilb stration on the right, compute the work done by the following: a. Tension (. b.…
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Q: 5. Calculate the work being done on 2000 N crate, being lifted 2 meters off the ground by a crane.…
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Q: If an object moves in a straight line from x1=1 m to x2 = 2 m by a force F = -7.2 x N. Find the work…
A: This can be solved using the basic definition of work. Refer next step for the solution.
Q: 12. A force is if the work it does around any closed path is zero.
A: A force is _________ if the work it does around any closed path is zero.
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
Q: Q1. A force of 7N as on an object. The displacement is, say 8 m, in the direction of the force. Let…
A: Given data, Force F = 7 N. Distance d = 8 m.
Q: 5. Compute the kinetic energy of a1200 kg. automobile traveling at 20 km/hr. 1
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