CAN SOMEONE DO THIS FOR ME!!!!!!!!!! PLEASEEEEEEEEEE

A 5g block rests on a rough horizontal table a rope attached to the block is pulled with a force of 11N to the left as a result

mr Goodwill [35]

<u>Complete Question:</u>

A 5 g block rests on a rough horizontal table. A rope is attached to the block and is pulled with a force of 11 N to the left. As a result, the block accelerates at 2 m/s^2. What is the kinetic friction between the block and the table?

<u>Correct Answer:</u>

The kinetic frictional force between the block and the rough surface is 10.99 N towards the right side.

$F_{net}$ = - 0.01 N is the resulting net force causing an acceleration of $2\ m/s^2$ to the left

<u>Explanation:</u>

According to the first law of motion by Newton, any object can be moved only when an unbalanced force acts on the object. As the block is placed on a rough horizontal table, then the applied force should be greater than the kinetic frictional force between the object and the rough surface, in order to move that block.

So, it is known that the net force acting on the block will be the difference between the force acting on the object due to the rope and the frictional force acting on the object.

$F_{net} = F_{rope} -F_{friction}$

So, the force acting on the block due to rope is given as 11 N. The net force should be equal to the product of mass and acceleration of the object, as per Newton's second law of motion. As the mass of the block is 5 g and the acceleration is given as $2\ m/s^2$ .

$F_{net} = Mass * Acceleration = \frac{5}{1000} * -2 = -0.01 N$

Since, the net force and the force due to rope is acting opposite to the gravitational force ,

-0.01 = -11 - Frictional force

Frictional force = -11 + 0.01 = -10.99 N

Thus, the kinetic frictional force between the block and the rough surface is 10.99 N towards the right side.

$F_{net}$ = - 0.01 N is the resulting net force causing an acceleration of $2\ m/s^2$ to the left

7 0

3 years ago

The volume V of a right circular cylinder of radius r and height h is V=πr2h. (a) How is dVdt related to drdt if h is constant a

Nikolay [14]

Answer:

(a) $\frac{dV}{dt}= 2\pi r h \frac{dr}{dt}$

(b) $\frac{dV}{dt}= \pi r^2 \frac{dh}{dt}$

(c) $\frac{dV}{dt} = \pi r^2\frac{dh}{dt}+2\pi r h\frac{dr}{dt}$

Explanation:

Differentiating Rules:

$\frac{dx^n}{dx}= nx^{n-1}$
$\frac{dx}{dx}=1$
$\frac{d}{dx}(mn)= m\frac{dn}{dx}+n\frac{dm}{dx}$ [ m and n are the function of x]
$\frac{d}{dx}(cn)=c \frac{dn}{dx}$ [ here c is constant and n is function of x]

Given that,

$V= \pi r^2h$

(a)

$V= \pi r^2h$

Differentiating with respect to t

$\frac{dV}{dt}= \frac{d}{dt}(\pi r^2h)$

$\Rightarrow \frac{dV}{dt}= \pi h \frac{d}{dt}(r^2)$ [ here $\pi h$ is constant]

$\Rightarrow \frac{dV}{dt}= \pi h 2r \frac{dr}{dt}$

$\Rightarrow \frac{dV}{dt}= 2\pi r h \frac{dr}{dt}$

(b)

$V= \pi r^2h$

Differentiating with respect to t

$\frac{dV}{dt}= \frac{d}{dt}(\pi r^2h)$

$\Rightarrow \frac{dV}{dt}= \pi r^2 \frac{dh}{dt}$

(c)

$V= \pi r^2h$

Differentiating with respect to t

$\frac{dV}{dt}= \frac{d}{dt}(\pi r^2h)$

$\Rightarrow \frac{dV}{dt} = \pi r^2\frac{dh}{dt}+\pi h\frac{d}{dt}(r^2)$

$\Rightarrow \frac{dV}{dt} = \pi r^2\frac{dh}{dt}+2\pi r h\frac{dr}{dt}$

3 0

4 years ago

PLEASE HELP!!!

d1i1m1o1n [39]

Answer: 95.7 N

Explanation: The tension on the chandelier is equal to the its weight.

Weight is the force directed downwards and tension is the force exerted of the opposite side.

T = W of the chain + W of the chandelier

= m1( g) + m2 (g)

= 0.37 kg ( 9.8 m/s2) + 9.4 kg (9.8 m/s2)

= - 95.7 N it means the force is directed downwards

since tension is equal weight

T = 95.7 N

6 0

3 years ago

Below, the two-way table is given for a class of students. Freshmen Sophomore Juniors Seniors Total Male 4 6 2 2 Female 3 4 6 3

julsineya [31]

The required probability is 3/4.We have to compute the probability

P(Female |Junior) because we have to find the probability of the female student and the given condition is that the student is junior.

Determine the total number of juniors.Juniors=2+6=8

<h3>What is the probability?</h3>

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates the impossibility of the event and 1 indicates certainty.

Since the number of females who are junior is 6, determine the required probability.

P(Female|Junior)=6/8=3/4

Therefore, the required probability is 3/4.

To learn more about the probability visit:

brainly.com/question/24756209

#SPJ1

5 0

2 years ago

Si un cuerpo se encuentra en reposo tiene energía cinética?¿por qué?

posledela

Answer:

This is because, when an object which has possessed kinetic energy under its being in motion hits another object, which is stationary the object at rest receives part of the energy inherent in the body which has kinetic energy and expresses the received energy in the form of motion or some forms different from the initial stationary position.

Explanation:

7 0

4 years ago