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bulgar [2K]
3 years ago
10

Rosný bod závisí od ?

Physics
1 answer:
WITCHER [35]3 years ago
8 0

Answer:

what did u say and what language are you speaking in

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You have a pulley 10.4 cm in diameter and with a mass of 2.3 kg. You get to wondering whether the pulley is uniform. That is, is
madreJ [45]

Answer:

Explanation:

Given

Diameter of Pulley=10.4 cm

mass of Pulley(m)=2.3 kg

mass of book(m_0)=1.7 kg

height(h)=1 m

time taken=0.64 s

h=ut+frac{at^2}{2}

1=0+\frac{a(0.64)^2}{2}

a=4.88 m/s^2and [tex]a=\alpha r

where \alphais angular acceleration of pulley

4.88=\alpha \times 5.2\times 10^{-2}

\alpha =93.84 rad/s^2

And Tension in Rope

T=m(g-a)

T=1.7\times (9.8-4.88)

T=8.364 N

and Tension will provide Torque

T\times r=I\cdot \alpha

8.364\times 5.2\times 10^{-2}=I\times 93.84

I=0.463\times 10^{-2} kg-m^2

I_{original}=\frac{mr^2}{2}=0.31\times 10^{-2}kg-m^2

Thus mass is uniformly distributed or some more towards periphery of Pulley

4 0
3 years ago
a heavy jar sits on top of a 3.4 m shelf with a gravitational potential energy of 180 j. What is the mass of the jar?
sp2606 [1]

Answer:

5.2941176471 kg or 5294.1 grams

Explanation:

g.p.e= mgh

g.p.e/gh=m

180j/10×3.4= m

180/34= m

5.2941 kg= m

6 0
2 years ago
Select the correct answer
Rasek [7]

Answer:

I would say the net force acting on the car is in the opposite direction of the car's motion  is correct

5 0
2 years ago
Read 2 more answers
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her
lisabon 2012 [21]

Answer:

10.09 N

Explanation:

Analogously to Newton's second law, torque can be defined as:

\tau=I\alpha

Here, I is the moment of inertia and \alpha is the angular acceleration. We have:

\tau=(0.65kg*m^2)(29.5\frac{rad}{s^2})\\\tau=19.18N*m

Torque is the vector product of the position vector of the point at which the force is applied by the force vector:

\vec{\tau}=\vec{r}\times \vec{F}

Since the effective lever arm is perpendicular to the force, the angle between them is 90^\circ. The magnitud of this vector product is defined as:

\tau=rFsen\theta.

Solving for F and replacing the known values:

F=\frac{\tau}{rsen\theta}\\F=\frac{19.18N*m}{1.9m(sen90^\circ)}\\F=10.09N

8 0
3 years ago
The five factors of production include land, _______, capital, entrepreneurship, and _______.
adell [148]
<span>The five factors of production include land, labor, capital, entrepreneurship, and knowledge. Land is considered as the primary because these are the pre-existent resources readily available from nature however, nowadays, these are already bought and passed down from generations. Capital is the money used for the production which needs to be returned when one invests on something. Labor is the person’s inputs which is very valuable. Entrepreneurship is how the person transact according to how the people negotiate. And knowledge is one of human’s invaluable efforts of giving the ideas.</span>
6 0
3 years ago
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