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3 years ago

Why centre of mass equal to centre of gravity

Physics

2 answers:

Maksim231197 [3]3 years ago

4 0

Because mass and distance determine gravity, so the more mass you have, the more gravity.

melisa1 [442]3 years ago

4 0

Hopefully this helps you The center of gravity is based on weight, whereas the center of mass is based on mass. So, when the gravitational field across an object is uniform, the two are identical. ... More practically, the COG is the point over which the object can be perfectly balanced; the net torque due to gravityabout that point is zero.

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A laser pointer is placed on a platform that rotates at a rate of 60 revolutions per minute. The beam hits a wall 10 m away, pro

Sever21 [200]

Answer:

$v = 20\pi sec^2\theta$

Explanation:

As we know that the angle made with the vertical is given so we have

$tan\theta = \frac{x}{10}$

so we have

$x = 10 tan\theta$

now differentiate both sides with time

$v = \frac{dx}{dt} = 10 sec^2\theta \frac{d\theta}{dt}$

$v = 10 \omega sec^2\theta$

now we know that

$\omega = 2\pi f$

$\omega = 2\pi (\frac{60}{60})$

$\omega = 2\pi$

now we have

$v = 10(2\pi) sec^2\theta$

$v = 20\pi sec^2\theta$

7 0

3 years ago

A current carrying wire of length 50cm is positioned perpendicular to a uniform magnetic field

RideAnS [48]

A current-carrying wire of length 50 cm is positioned perpendicular to a uniform magnetic field. The magnetic field strength is 0.6 Tesla.

<h3>What is magnetic field?</h3>

The magnetic field is the region of space where an object experiences a magnetic force as it enters the field.

Given is the wire of length 50 cm = 0.5 m and the current is 10.0 A. There is a resultant force of 3.0 N on the wire due to the interaction of the current and field.

The relation between magnetic field strength and current is

F = ILB

Substituting 50 for L, 10 for I and 3 for F, we get the magnetic field strength B.

3 = 10 × 0.5 × B

B= 0.6 Tesla

Therefore, the magnetic field strength is 0.6 Tesla.

Learn more about magnetic field.

#SPJ

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1 year ago

Why don't the planets move exactly along the ecliptic?

AVprozaik [17]

As seen from the Earth, the Sun, Moon, and planets all appear to move along the ecliptic. ... Unlike the Sun, however, the planets don't always move in the same direction along the ecliptic. They usually move in the same direction as the Sun, but from time to time they seem to slow down, stop, and reverse direction!

Because of various events in their (unknown) past history that resulted in deviations from the theoretical orbit. That formed in the plain of the ecliptic.

Capturing a large passing comet or asteroid might do it.

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3 years ago

A student of weight 652 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude

miskamm [114]

Answer:

Explanation:

Given

Weight of person $W=652\ N$