work done by F

Q: Calculate the amount of work done if a 300 N object is lifted to a height of 2.5 m.

A: Given that Weight of object F = 300 N Height h = 2.5 m

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

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Q: A 5.6 kg block slides 13.6 m down a frictionless ramp. The ramp is inclined at an angle of 42…

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Q: Calculate the work done by a force of 70 N in lifting a load of 5kg to a height of 10m (g = 10ms2)

A: Work done is calculated as:   Work = Force x Displacement W = F.d…

Q: Find the displacement Work done=112 J Force=55 N

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Q: When the mechanical energy decreases , the work negative True or false

A: Mechanical energy E is the sum of Kinetic energy and Potential energy of an object E = KE +PE When…

Q: What is the average useful power output of a tractor that does 290O J of useful work in 4.8 hours?…

A: We know that, Power= Work done per unit time Where time is in seconds  , Mathematically, P = W x t…

Q: a winch pulls the truck against 500N of friction and does 3000 joules of work how far did the winch…

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Q: The disk of mass M= 1 kg and radius R=1 m in the figure has a mass m=30 g attached to one end. The…

A: We are given the angular velocity of system. Angular velocity is counterpart of linear velocity in…

Q: 1 Newton of force is applied to a stone to move 100 cm. Calculate the work done.

A: Given, Force = 1 N Displacement = 100 cm = 1 m Work done = ?

Q: Mike is cutting the grass using a human powered lawn mower. He pushes the mower with a force of 45 N…

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Q: What is work

A: Work is said to be done when a force applied to an object moves that object. Work is defined as a…

Q: A 51.2 kg gymnast climbs a rope at a constant upward acceleration of 1.21 meters/second². What is…

A: Given value--- mass = 51.2 kg. a = 1.21 m/s2.  We have to find--- tension in the rope  ?

Q: Compute displacement Work done=112.212 J Force=123 N

A: Given data :Workone=112.212 JForce=123 NRequired :displacement

Q: 5. bhat power in KW 1s Kupplied to a 12 hp mo tor having an effiaenay of qo percent chen it is…

A: Input powerPin. Given, motor horsepowerhp=12 hpefficiencyη=90%=0.90

Q: What is the derived S.I. unit for power? newtons O horsepower O joules watts

A: Newton is used to measure force which is obtained when mass of a body is multiplied with its…

Q: 18 kg. over the side of a building. the work required to the chain

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Q: Write down The relationship between the total work done on an object and how the object’s speed…

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Q: 13. A machine does 192 J of work in 24 Sec. What is the power of the machine?

A: Given data The work done by the machine is given ad W = 192 J. The time duration is given as T = 24…

Q: A car of mass 1500 kg is initially travelling at a speed of 12 m/s. The driver then accelerates to a…

A: Mass of the car,  Initial speed of the car,  Final speed of the car,  Distance traveled,

Q: A cannon fires a projectile with a speed of 110 m/s at a 30° to the horizontal. The opening of the…

A: Speed of the projectile = v = 110m/s Mass of the projectile = m = 7.0 kg Angular Velocity of the…

Q: The rate of doing work is known as

A: In physics, the rate of doing work is known as Power. It is equivalent to an amount of energy…

Q: A 380-lb gorilla climbs a tree to a height of 23 ft. Find the work done (in ft-lbs) if the gorilla…

A: Weight of gorilla = 380 lb  Displacement of gorilla = 23 ft

Q: A 85 lb mass stretches a spring 3 inches. Find the work done by the force to stretch the spring 7…

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Q: A 50-ft rope weighing 35 pounds hangs from the ceiling of a 100-ft tall warehouse. Attached to the…

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Q: how to find if an object has an initial mechanical energy

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Q: An object undergoing projectile motion was launched with an initial velocity of 15 m/s and at an…

A: Given, Initial velocity of projectile , v = 15 m/s Angle,θ = 30.0° The distance travelled in…

Q: What is the current total mechanical energy of 80-kg skydiver whose speed is 70 m/s at an altitude…

A: solution as

Q: A force of 450 N is used to push a 145 kg mass 30 m horizontally in 3 seconds. Calculate the work…

A: Write the expression for the work done and substitute the corresponding values to calculate the work…

Q: A contractor lifts beams (905 kg) 52 m using a 10 hp-rated crane. How much work is required to lift…

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Q: How long will it take a 25 W machine to produce 438 J of work?

A: Power(p)= Work/Time So, Time = Work/Power

Q: 10. The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N ? Ans. 2 ms

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Q: A body does 26 Joules of work in 4. seconds. What is it's power?

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Q: A spring 40mm ling is stretched by the application of force. If 10N force is required to stretch the…

A: k=Fx=10 N40 mm10-3 m1 mm=250 N/m

Q: Find the acceleration of the cart if the coefficient of friction between the table and the wheel of…

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Q: Consider a 40-foot chain that weighs 5 pounds per foot hanging from a winch 40 feet above ground…

A: To solve the problem, we will write an expression for work done and apply it to the given situation.…

Q: Find the force applied Work done 887.22 J Displacement 55 m

A: Given data : Work done=W Displacement=d   Required : Force applied

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.