Assuming there's no friction.
Work = Force*Distance
Work = 5*20 = 100 Joules
About 8 million. Country Pop. Killed/Mising Wounded Total(Military) Civilian (deaths) Germany 78m 3.5 million 4.6 million 8.1 million 2million Italy 44m 330,000 ? 70,000 Japan 72m 1.75 million ? 350,000 Rumania 20m 500,000 300,000 800,000 400,000 Bulgaria 6m 10,000 ? 50,000 Hungary 10m 120,000 250,000 370,000 200,000 Finland 4m 100,000 45,000 145,000 4,000 Country Pop. Killed/Mising Wounded Total(Military) Civilian (deaths) Source: world war 1 casualties (Google) Copernic
Yes, they get paid. Professional athletes are among the highest paid people in the world. Some of the higher salaries in the NBA range from 20 million to 16 million a year while the lower contracts range from 2 million to 5 million a year.
Work = Force x DistanceForce = Mass X Gravity (Near earth approximation)SoWork = 30kg x 9.8 m/s2 x 20m = 5880 joules
Work W done by a constant force F that produces a displacement L in the direction of the force is : W = F∙L for the case stated: W = 100N∙20m = 2 000J (joules) The mass of the object is not involved in the calculation.
Well, isn't that just a happy little problem we have here? To calculate the work done, we need to consider the component of the force in the direction of motion. Since the force is inclined at an angle of 60 degrees, we can find the component of the force in the direction of motion by multiplying the force by the cosine of the angle. So, the work done would be 50N * cos(60°) * 20m. Happy calculating!
The work done to lift a mass is given by the formula: work = force x distance. In this case, the force needed to lift the 500kg mass against gravity is its weight, which is 500kg x 9.81m/s^2 = 4905 N. The work done would be 4905 N x 20m = 98100 Joules.
The work done by an elephant while moving the circus wagon can be calculated as the product of the force applied (200N) and the distance moved (20m), which gives a total work of 4000 joules.
The work done by the machine would be the force required to lift the object multiplied by the distance it was lifted, which is 500kg * 9.81 m/s^2 * 20m = 98100 J. The power output would then be work done divided by time taken, which is 98100 J / 60 s = 1635 W or 1.64 kW.
work done = m*g*h = mass * acceleration due to gravity * height change. work done = 50 * 9.8 * 20 work done = 9 800 joules
First, calculate the work done. Work is equal to the force on an object multiplied by the distance the object was moved by that force. W = Fd Since the bag of cement weighs 100 N, the force required to move it at a constant velocity must equal 100 N (otherwise, it would accelerate). The distance is given as 20m. W=(100N)(20m)=2000 Nm or 2000 Joules Next, calculate the power. Power is defined as the work done per time, or work divided by time. P=W/t You have already calculated the work (2000 J), and the time is given as 10 seconds. P=2000J/10s=200 Watts
20m x 20m = 400 metres2
20m
150 joules (W=f.d) IF the force is applied in exactly the same direction thatthe object moves. If the force acts in a different direction, then the work isless than 150 joules.An example might be a small crate with a rope attached somewhere on one sideof it. If you need to slide the crate along the floor, you grab the rope, but youprobably don't crouch down and pull on it horizontally. Instead, the rope anglesup slightly to your hand. In this case, the work done is somewhat less than(the force you exert on the rope) multiplied by (the distance the crate moves).The exact value depends on the exact angle of the rope.
20000000 ( 2 crore is ) 20M