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work is equal to a change in energy. in this case there is a change in potential energy.
potential energy = mass x gravity x height
E(p)=mgh
E(p)= 3x9.8x40
E(p)=1176 J
thus there is a change in potential energy of 1176 joules
and since W=change E(p)
Work done is 1176 J
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∙ 14y ago
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How much work is done when a mass weighing 350 N is lifted 4 meters?
1400j
How much work is done when an object with a mass of 78 kilograms is lifted through a height of 6 meters?
78*6*9.8 N = 4586.4 N
A 10 KG mass is lifted to a height of meters what is its weight?
To get the weight (in Newton), multiply the mass by Earth's gravitation - about 9.8, in SI units.
What is the momentum of a 30 kg cart moving with a speed of 10 meters per second?
The momentum is given by the formula... p=mv p=momentum m=mass v=velocity In your question your mass is 30kg and your velocity is 10m/s just do simple math and your momentum is 300kg*m/s
What units of measurement would you use to measure height and mass?
Meters for height Kilograms for mass.
How much work is done when a mass weighing 350 N is lifted 4 meters?
1400j
If you have a kinetic energy of 45 j and your mass is 30kg then what is your velocity?
Your velocity is 1.73 meters per second.
If mass is 30kg what does it mass on earth?
A: The mass would not change: 30kg. A: The Earth would be about 5.9742 × 1024 kg
How much work is done when an object with a mass of 78 kilograms is lifted through a height of 6 meters?
78*6*9.8 N = 4586.4 N
What is a weight on earth of a girl with a mass of 30kg?
On Earth, gravitation is approximately 9.8 meters/second square. Therefore, multiply by 9.8.
An object of mass 4.5 is lifted through a distance of 10m H ow much work is done?
I believe that when you say 'lifted through', you mean lifted to a height of 10m. If so, the amount of work is such: Work= Force x Distance which have the units (Joules = Newtons x meters) When the object is lifted, it increases in its potential energy. The equation for this is: Potential energy = mass x gravitational force x height = 4.5 x 9.81 x 10 =441.45 Joules As 1 joule = 1 newton x meters and we have 441.45 Joules, 441.45 joules of works is done! :D
An object with a mass of 21kilograms is lifted through a distance of 7 meters How much work is done?
use the formula W = mgs W stands for work done in joules m stands for mass of the object g stands for gravity s stands for the distance the object is lifted W = mgs W = 78kilograms•9.8m/s2•6meters W = 4586.4 J (joules) answer would be 4,586.4 J
An object with a mass of 21 kg is lifted through a distance of 7 meters how much work is done?
Work = (force) x (distance) = 7 x 2.4 = 16.8 joules
A 10 KG mass is lifted to a height of meters what is its weight?
To get the weight (in Newton), multiply the mass by Earth's gravitation - about 9.8, in SI units.
The work done to lift a 30kg of bricks to a height of 20m is equal to?
Work = Force x DistanceForce = Mass X Gravity (Near earth approximation)SoWork = 30kg x 9.8 m/s2 x 20m = 5880 joules
What is the mass of a pencil case?
2kg
An object with a mass of 21 kilograms is lifted through a distance of 7 meters How much?
question 24 on penn foster is C.
