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2 years ago

5. Find the net force acting on the books below

Physics

2 answers:

postnew [5]2 years ago

5 0

The net force on an object is the combined effect of all the pushing and pulling forces actually acting on the object.

Net force acting on book is F = 4 N

The net force on an object is the combined effect of all the pushing and pulling forces actually acting on the object.

If the forces pushing or pulling on an object are not balanced then the object will accelerate in the direction of the net force

If the forces pushing or pulling on an object are balanced then the object will be in rest position.

Net force on book is,

F(net) = 7 - 3 = 4 N

Learn more:

https://brainly.in/question/322627

notka56 [123]2 years ago

4 0

Answer:

F(net) = 7 - 3 = 4 N

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What is the speed of a helicopter that traveled 1500 miles in 7 hours?

Maslowich

The answer is....

214.28
which would be 214.3 or 214

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3 years ago

A 111 kg 111 kg horizontal platform is a uniform disk of radius 1.67 m 1.67 m and can rotate about the vertical axis through its

Mashcka [7]

Answer:

287.19 kg.m²

Explanation:

Given that :

The mass M of the horizontal platform = 111 kg

The radius R of the uniform disk = 1.67 m

mass of the person standing $m_p$ = 64.7 kg

distance of the person standing $d_p$ = 1.15 m

mass of the dog $m_d$ = 25.7 kg

distance of the dog $d_d$ = 1.35 m

Considering the moment of inertia of the object in the system; the net moment of the inertia can be expressed as:

= $\frac{MR^2}{2}+m_pd_p^2+m_dd_d^2$

= $(\frac{111*1.67^2}{2})+ (64.7 *1.15^2)+ (25.7*1.35^2)$

= 287.19 kg.m²

5 0

4 years ago

Write down four reasons why plastic is put around electrical wires? <br><br> Plz help me

postnew [5]

Answer:

1) is to prevent accidental contact with other conductors of electricity

2) to prevent getting shocked

3) Plastic helps dissipate the heat as well as prevent the wire from getting too hot and causing fire.

4) Without plastic, hot and neutral wires cannot be run in the same conductor or same wire

Explanation:

hope this helped and plz mark me as brainliest

3 0

3 years ago

Read 2 more answers

A 0.140 kg baseball is thrown with a velocity of 33.6 m/s. It is struck with an average force of 5000.0 N, which results in a ve

timama [110]

Answer:

0.00198 secs

Explanation:

Parameters given:

Mass of baseball, m = 0.14 kg

Initial velocity of baseball, u = 33.6 m/s

Force applied to baseball, F = -5000 N

(The force is applied in an opposite direction to the initial velocity)

Final velocity, v = -37 m/s

Using the impulse-momentum theory, we have that the impulse applied to the baseball is equal to the change in momentum of the baseball:

FΔt = m(v - u)

Time interval, Δt, will be given as:

Δt = $\frac{m(v - u)}{F}$

Δt = $\frac{0.14(-37.0 - 33.6)}{-5000}$

Δt = $\frac{0.14 * -70.6}{-5000}$

Δt = $\frac{-9.884}{5000}$

Δt = $0.00198 secs$

The bat and the baseball were in contact for 0.00198 secs.

5 0

4 years ago

Plz hep me tell ans of this only

Stolb23 [73]

We have no idea what force the object might exert until it hits something.

In order to accelerate 70 kg at the rate of 20 m/s^2, YOU or some machine has to PUSH it with a force of (F=m•a) 1,400 Newtons. If you stop pushing it, it stops accelerating.

4 0

3 years ago