Ask question

Ask question

All categories

mihalych1998 [28]

2 years ago

5

Assume the elevator has upward acceleration a, and consider the stack that has two boxes of mass M. What is the magnitude of the

force exerted on the top box by the bottom box

1 answer:

asambeis [7]2 years ago

4 0

Answer:

Explanation:

M(a+g)

You might be interested in

What are close-toed shoes least likely to provide protection against?

Dennis_Churaev [7]

Hydrogen gas is harmless to your feet so since you don’t need protection against it that seems the best answer.

8 0

2 years ago

Read 2 more answers

3. Solve for y:<br><br><br> 14=84 over y <br><br><br> what is y

andreyandreev [35.5K]

Answer:6

Explanation:

4 0

2 years ago

How much work is done when an engine generates 400 Watts of power in 25 seconds?

IceJOKER [234]

Answer:

10000 J or 10 KJ

Explanation:

power = workdone/time taken

400 = workdone/25

workdone = 400 * 25

=10000 J

8 0

2 years ago

Read 2 more answers

Every object in the universe exerts a force on every other object. This force is called

MrMuchimi

Gravity is the correct answer.

6 0

3 years ago

A proposed space station consists of a circular tube that will rotate about its center (like a tubular bicycle tire), Fig. 5–39.

Trava [24]

Answer:

1742.24106 revolutions per day

Explanation:

v = Velocity

d = Diameter = 1.1 km

r = Radius = $\dfrac{d}{2}=\dfrac{1.1}{2}=0.55\ km$

g = Acceleration due to gravity = 9.81 m/s²

g = 0.9 g

The centrifugal force will balance the gravitational force

$F_c=mg\\\Rightarrow \dfrac{mv^2}{r}=m0.9g\\\Rightarrow v=\sqrt{\dfrac{0.9gmr}{m}}\\\Rightarrow v=\sqrt{0.9gr}\\\Rightarrow v=\sqrt{0.9\times 9.81\times 0.55\times 10^3}\\\Rightarrow v=69.68464\ m/s$

$\dfrac{1}{T}=\dfrac{v}{2\pi r}\\\Rightarrow \dfrac{1}{T}=\dfrac{69.68464}{2\pi 0.55\times 10^3}\times 24\times 60\times 60\\\Rightarrow \dfrac{1}{T}=1742.24106\ rev/day$

The rotation speed is 1742.24106 revolutions per day

6 0

3 years ago

Read 2 more answers