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3 years ago

A ball on a string is swung around in a horizontal circle. The centripetal force

Physics

1 answer:

ivanzaharov [21]3 years ago

5 0

Answer:

0.60 N, towards the centre of the circle

Explanation:

The tension in the string acts as centripetal force to keep the ball in uniform circular motion. So we can write:

(1)

where

T is the tension

m = 0.015 kg is the mass of the ball

is the angular speed

r = 0.50 m is the radius of the circle

We know that the period of the ball is T = 0.70 s, so we can find the angular speed:

And by substituting into (1), we find the tension in the string:

And in an uniform circular motion, the centripetal force always points towards the centre of the circle, so in this case the tension points towards the centre of the circle.

Explanation:

You might be interested in

"The earth system": includes parts that affect one another. is the highest level of system possible. is powered solely by the Su

nalin [4]

Answer:

Includes parts that affect one another

Explanation:

The earth system is an integrated system that represents the planet Earth. This system is inside the Solar System, which is inside the Milk Way Galaxy system, which is inside the Universe. So, the earth system is not the highest level of the system possible.

This system can be subdivided into four main systems: geosphere (the rock and minerals), atmosphere (the air), hydrosphere (the oceans, sea, rivers, and lagoons), and the biosphere (the life). These parts can affect one another and are integrated. The life consumes the atmosphere, geosphere, and hydrosphere, for example.

The most important power of the earth system is the Sun, but it's not the only power, especially because human activity uses other resources like petroleum, water, nuclear power, etc.

The system is affected by the Sun, which is in the space and is the primary energy source, by the Moon that causes the tide, and it can be affected by meteors too.

3 0

4 years ago

A light string is wrapped around the outer rim of a solid uniform cylinder of diameter 75.0 cm that can rotate without friction

anyanavicka [17]

Answer:18.5 kg

Explanation:

Given

diameter $d=75 cm$

mass of stone $m=3 kg$

velocity of stone $v=3.4 m/s$

height fallen $h=2.40 m$

using

$v^2-u^2=2as$

$(3.4)^2=2\times a\times 2.4$

$a=2.4 m/s^2$

Tension of string will Provide Torque to cylinder

$T\times r=I\times \alpha$

where $I=moment\ of\ inertia$

$\alpha =angular\ acceleration$

$T=\frac{Mr^2}{2}\times \frac{a}{r}$

$T=\frac{Ma}{2}$

and $mg-T=ma$

$mg-ma=T$

Put value of T

$mg-ma=\frac{Ma}{2}$

$mg=a(m+\frac{M}{2})$

$3\times 9.8=2.4\cdot (m+\frac{M}{2})$

$12.25=3+\frac{M}{2}$

$9.25=\frac{M}{2}$

$M=18.5 kg$

4 0

4 years ago

The asthenosphere is a part of the upper mantle just below the lithosphere that is involved in plate tectonic movement and isost

lisov135 [29]

Complete option to the question:

A. The asthenosphere is broken up into large continental- and ocean-sized plates.

B. Convection currents within the asthenosphere push magma upward to create new crust.

C. Heat from deep within Earth is thought to keep the asthenosphere malleable.

D. The asthenosphere is the repository for parts of the lithosphere that are dragged downward in subduction zones.

Answer: The correct option is A (The asthenosphere is broken up into large continental- and ocean-sized plates.)

Explanation:

Among the components that makes up the earth crust are the lithosphere and the asthenosphere.

The LITHOSPHERE is the outer layer of the earth structure which consists of the upper part of the mantle and the crust.

The ASTHENOSPHERE is a part of the upper mantle just below the lithosphere that is involved in plate tectonic movement and isostatic adjustments. It is denser and weaker layer of the upper mantle which permits the movement of tectonic plates in the lithosphere.

The asthenosphere is the repository for parts of the lithosphere that are dragged downward in subduction zones.Heat from deep within Earth is thought to keep the asthenosphere malleable. And the convection currents within the asthenosphere push magma upward to create new crust. But it is not broken up into large continental- and ocean-sized plates.

8 0

3 years ago

The type of graph used to show how a part of something relates to the whole is which of the following

netineya [11]

The answer is circle graph because it shows how a part relates to the whole number.= )

8 0

3 years ago

Consider the chemical reaction involving graphite as the reactant:

ziro4ka [17]

Answer:

D may likely be your answer

8 0

3 years ago