| Work | SI unit joule (J) | Other units Foot-pound, Erg | In SI base units 1 kg⋅m 2 ⋅s − 2 | Derivations from other quantities W = F ⋅ s W = τ θ |
|---|
How much work does a mother do if she lifts each of her twin babies upward 1.0 m each baby weighs 90 N?
Work to lift each baby = (90N) x (1.0 meter) = 90 joules. Work to lift both of them = 2 x 90 joules =
180 joules
.
What are the 2 units that represent work?
Joules (J) and Newton-meters (Nm)
both represent work.
How much work do you do to carry the sled if your house is 800 m away?
How much work do you do to carry the sled if your house is 800 meters away?
50 Joules to lift sled
and no work is done to carry the sled 9. An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 10 meters.
How much work is done by a crane that lowers 1000 N?
| Question Answer | What is the formula for work? Work= force x distance | What are the units for work? Joules or N*m | How much work is done by a crane that lowers 1,000 Newtons of material a distance of 150 meters? W= (1000N)(150 m) = 150000 J |
|---|
What is work done formula?
Mathematically, the concept of work done W equals the force f times the distance (d), that is W = f. d and if the force is exerted at an angle θ to the displacement, then work done is calculated as
W = f . d cos θ
.
How do you calculate work?
The formula for work is ,
work equals force times distance
. In this case, there is only one force acting upon the object: the force due to gravity. Plug in our given information for the distance to solve for the work done by gravity.
What force are you working against when you lift a backpack?
The force you are applying is
upwards
. Since the backpack does not move upward as you walk horizontally you do no work on the object.
What relationship exists between work and distance?
In physics, force is the energy required to move an object, and distance is how far the object travels. Work only
occurs when a displacement of distance has occurred
. For example, in physics, if you push on a car, but no movement has happened, work has not occurred.
How much work is done on a 10 N block that is lifted 5 m off the ground by a pulley?
⛬ w = 10 x 5 =
50 J
ans .
What is work measured in?
One joule
is defined as the amount of work done when a force of one newton is exerted through a distance of one meter. In the English system of units, where force is measured in pounds, work is measured in a unit called the foot-pound (usually abbreviated ft-lb).
How much work is done on a 300 Newton suitcase to lift it 0.50 meter?
Work done is force multiplied by distance, Hence work done is 300×0.50=
150 joules
.
How much work is being done by a crane that lowers 1000 Newtons of material a distance of 150 meters?
Work=
150000 Joules
. So, the work done by crane that lowers 1000 Newton’s of a material a distance of 150 meters is 150000 Joules.
How much work is required to lift a 2 kg mass to a height of 10 meters?
the Work done to life the mass of 2 kg to a height of 10 m is
196 J
.
What is current formula?
The current is the ratio of the potential difference and the resistance. It is represented as (I). The current formula is given as
I = V/R
. The SI unit of current is Ampere (Amp).
What is dimensional formula of work done?
Or, W = [M
1
L
1
T
– 2
] × [M
0
L
1
T
0
] = [M
1
L
2
T
– 2
]. Therefore, work is dimensionally represented as
[M
1
L
2
T
– 2
]
.
