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You hold a100 kg box motionless over your head for 5 seconds how much work is done?
Wiki User
∙ 13y ago
work = force x time
f=ma so
100 x 9.81 x 5
4905 W
Wiki User
∙ 13y ago
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Why isn't work done as you hold a book motionless over your head?
Because it does not require movement or apply force toward the body therefore, this is not work. :)
What is static head of water?
Static === still, motionless --- Head refers to the pressure water in motion will create a 'head' just from being in motion.
What is the work done by a person who carries 50N weight on his head and walk 8 m?
The total work done on the weight is zero.
Which device is used for converting potential energy into kinetic energy?
There is no "device" that is used to convert potential energy (PE) to kinetic energy (KE). PE is energy of position, for example, a bowling ball held over your head has the potential of breaking your foot if it were to fall. KE is energy of motion, for example, the energy the bowling ball has as it is falling toward your foot. The amount of PE the bowling ball had when it was motionless at some height above your head is approximately equal to the amount of KE the bowling ball has just before it lands on your foot.
A boy weighing 30 kg carries a load of 10 kg on his head and moves straight through a distance 5 m on a horizontal floor What is the work done by the boy?
Slave Work
Why isn't work done as you hold a book motionless over your head?
Because it does not require movement or apply force toward the body therefore, this is not work. :)
What are good sentences for the word motionless in the sentence?
The man lay they motionless after I shot him in the head once.When Al went to check on the girl who'd fainted, she was lying there motionless, later pronounced dead.
How to work out abs through motionless exercise?
There are many isometric, or motionless, exercises that a person can do for their abdominal muscles. Planking--resting on the elbows with a ridged body--is one of the most common and effective. Another is a leg raise, where a person raises their legs and head and remains stationary in this position for a period of time, typically more than thirty seconds.
What is static head of water?
Static === still, motionless --- Head refers to the pressure water in motion will create a 'head' just from being in motion.
Is the weightlifter doing any work when she holds the barbell motionless above her head?
This weightlifter did work on the barbell to lift it over her head.
What is the duration of The Head?
The duration of The Head is 660.0 seconds.
What is the duration of Out of Jimmy's Head?
The duration of Out of Jimmy's Head is 1320.0 seconds.
What is the duration of Fred's Head?
The duration of Fred's Head is 1320.0 seconds.
What is the duration of Head Case?
The duration of Head Case is 720.0 seconds.
What is the duration of Head Chef?
The duration of Head Chef is 3600.0 seconds.
What is the duration of Herman's Head?
The duration of Herman's Head is 1440.0 seconds.
What is the duration of Head Cases?
The duration of Head Cases is 2580.0 seconds.
