Ask question

Ask question

All categories

3 years ago

8

What is the difference between internal and external force

1 answer:

AnnZ [28]3 years ago

7 0

Answer:External forces are forces caused by external agent outside of the system. Internal forces are forces exchanged by the objects in the system.

Explanation:or our purposes, we will simply say that external forces include the applied force, normal force, tension force, friction force, and air resistance force. And for our purposes, the internal forces include the gravity forces, magnetic force, electrical force, and spring force.HOPE THIS HELPS!!! ^w^

You might be interested in

A block of mass m 5 kg slides with an initial speed vi = 5 m/s to the right toward a ramp of mass M = 20 kg. The ramp itself can

tatuchka [14]

Answer:

Part a)

$v_{cm} = 1 m/s$

Part b)

$h = 1.02 m$

Part c)

$v_1 = 3 m/s$

$v_2 = 2 m/s$

Explanation:

Part a)

When block reached to maximum height then block and ramp will move together.

so here we will have

$v_{cm} = \frac{mv}{M + m}$

$v_{cm} = \frac{5(5)}{5 + 20}$

$v_{cm} = 1 m/s$

Part b)

Now we can use energy conservation to find the height

$\frac{1}{2}mv^2 = \frac{1}{2}(M + m)v_{cm}^2 + mgh$

$\frac{1}{2}(5)(5^2) = \frac{1}{2}(20 + 5)1^2 + 5(9.81)h$

$h = 1.02 m$

Part c)

When block and ramp separate finally then we have

$mv = -mv_1 + Mv_2$

$5\times 5 = -5 v_1 + 20 v_2$

$4v_2 - v_1 = 5$

also by energy equation

$\frac{1]{2}(5)(5^2) = \frac{1}{2}(5)v_1^2 + \frac{1}{2}(20)v_2^2$

$25 = v_1^2 + 4 v_2^2$

by solving above equations we have

$v_1 = 3 m/s$

$v_2 = 2 m/s$

8 0

3 years ago

A box at rest is in a state of equilibrium half way up on a ramp. The ramp has an incline of 42° . What is the force of static f

olchik [2.2K]

Answer:

Explanation:

The force of static friction acting on the box is the frictional force;

Frictional force Ff = Wsin theta (force acting along the ramp)

W is the gravitational force known as the weight

Ff = 112.1sin42°

Ff = 112.1(0.6691)

Ff = 75.00N

Hence he force of static friction acting on the box if box has a gravitational force of 112.1 N id 75.00N

4 0

3 years ago

A 4.0-μF capacitor that is initially uncharged is connected in series with a 4.0-kΩ resistor and an ideal 17.0-V battery. How mu

Komok [63]

Answer:

Indian girls

Explanation:

I don't know what do you expect I don't know this

4 0

3 years ago

What does the principal quantum number determine?

morpeh [17]

<span>principal quantum number (n) </span>represents the relative overall energy of each orbital

Hope this helps!

4 0

3 years ago

A published hypothesis:

kow [346]

Answer:

should be tested by the scientific community

4 0

3 years ago