Explanation:Work is a term used to define the force applied in order to gain some thing done, which can be the change of location of a things from point one to allude two.

You are watching: Why is a generator armature harder to rotate

Work deserve to additionally be explained as the product of pressure applied to an item and also the distance moved by that object of which the pressure is used.

MATHEMATICALLY WORK DONE CAN BE REPRESENTED AS FORCE*DISTANCE.



Calculate just how much work-related is forced to launch a spacecraft of mass m from the surchallenge of the earth (mass mE, radius RE) and plac

To fix this trouble it is essential to apply the concepts regarded the conservation of power, with the balance between the occupational done and also its corresponding transformation from the gravitational potential power.

Mathematically the conservation of these 2 energies can be provided through

*

Wbelow,

W = Work

*
Final gravitational Potential energy

*
Initial gravitational Potential energy

When the spacecraft of mass m is on the surchallenge of the earth then the power possessed by it

*

Where

M = mass of earth

m = Mass of spacecraft

R = Radius of earth

Let the spacecraft is now in an orlittle whose attitude is

*
then the energy possessed by the spacecraft is

*

Work essential to put it in orbit is the distinction between the over two

*

*

As such the work compelled to launch a spacecraft from the surchallenge of the Eart andlocation it ina circularlow earth orlittle is

*


3 0
9 months ago

Which of these explains static electricity?
jarptica <38.1K>
The correct jiyuushikan.org Temporary charge
5 0
6 months ago
Read 2 more jiyuushikan.orgs

A skier is pulled by a tow rope up a frictionmuch less ski slope that makes an angle of 17° with the horizontal. The rope moves paral
pishuonlain <190>

jiyuushikan.org:

(a) 950J

(b) 216 W

(c) 316.67 W

Explanation:

(a) If the skier is relocating at a consistent speed, then his kinetic energy is unadjusted. The work-related done by the rope is the same for rate at 2.2m/s as it is for 1.5m/s. It is 950J

(b) When the speed is 1.5m/s then the time it would certainly take to move up a distance of 6.6 m is 6.6 / 1.5 = 4.4 s

If the occupational is 950J over 4.4s then the rate of job-related is 950 / 4.4 = 216 W

(c) When the speed is 2.2 m/s then the moment it would take to relocate up a distance of 6.6 m is 6.6 / 2.2 = 3 s. If the occupational is 950J over 3s then the price of occupational is 950 / 3 = 316.67 W


7 0
8 months ago
Read 2 even more jiyuushikan.orgs

In being served, a tennis ball is sped up from rest to a rate of 31.6 m/s. The average power created in the time of the serve is
joja <24>

jiyuushikan.org:

The pressure acting on the ball is 92.4 N.

Explanation:

Given that,

Initial rate of the round, u = 0

Final speed of the sphere, v = 31.6 m/s

The average power generated throughout the serve is 2920 W. Power produced by an item is provided by :

*

W is the job-related done, W = Fd

*

Due to the fact that,

*

So,

*

F is the pressure acting on the ball

*

So, the pressure acting on the ball is 92.4 N. Hence, this is the forced solution.


7 0
10 months ago

Two world, one of mass 78 kg and the other of mass 59 kg, sit in a rowboat of mass 88 kg. With the watercraft initially at rest, the
sweet <91>

The watercraft will move -0.24 m and also the negative authorize shows left direction.

See more: Why Do Football Players Wear Bands On Their Legs, Those Thin Bands On Their Arms

Explanation:

mass of human being A = 78 kg

mass of human being B = 59 kg

mass of rowwatercraft = 88 kg

Let the displacement of the watercraft be x

*

*

= 2.9 + x

*

= -2.9 + x

As net external F = 0

∑mx = 0

88 (x) + 78 (2.9 + x ) + 59 (-2.9 + x) = 0

88x + 226.2 + 78x - 171.1 + 59x = 0

225x + 55.1 = 0

x = -55.1 / 225

x = -0.24

The negative authorize shows left direction.


6 0
11 months ago
Other questions:
×
Add jiyuushikan.org
Send
×
Login
E-mail
Password
Remember me
Login
Not registered? Quick signup
×
Signup
Your nickname
E-mail
Password
Signup
cshed
Login Signup
Ask question!