Ask question

Ask question

All categories

4 years ago

7

A custodial pushes a crate across the gym floor. What are the forces used

1 answer:

Galina-37 [17]4 years ago

6 0

Answer:

when a custodian pushes a large crate across the gym floor, forces acting on the crate are the one applied by the custodian, frictional force acting in the opposite direction of motion acting between the surface of crate and floor and reaction force (normal force) acting in upward direction normal to the surface

Explanation:

You might be interested in

A force of 30 N is applied tangentially to the rim of a solid disk of radius 0.14 m. The disk rotates about an axis through its

jenyasd209 [6]

Answer:

3.8 kg

Explanation:

The torque, <em>τ</em>, due to the force, <em>F</em>, is given by

$\tau = F\times r$

where <em>r</em> is the radius.

This torque is also given by

$\tau = I\times\alpha$

where <em>I</em> and <em>α</em> are respectively the moment of inertia and the angular acceleration.

For a solid disk, its moment of inertia for an axis though its centre and perpendicular to its face is given by

$I = \frac{1}{2}mr^2$

where <em>m</em> is its mass and <em>r</em> is its radius.

Hence, we have

$\tau = F\times r = I\times\alpha=\frac{1}{2}mr^2\times\alpha$

$m = \dfrac{2F}{r\alpha} = \dfrac{2(30\ \text{N})}{(0.14\ \text{m})(115\ \text{rad/s}^2)} = 3.8\ \text{kg}$

5 0

3 years ago

Read 2 more answers

Recalculate 100 km/h to m/s

qwelly [4]

= 27.777

Explanation:

A kilometer has 1,000 meters, and an hour has 3,600 seconds, so 100 kilometers per hour is: 100 x 1,000 / 3,600 = 27.777... m/s.

4 0

3 years ago

Are stars really planets?

Tems11 [23]

Stars are not really planets because they are far, far away from our solar system.
Hope this is helpful~

8 0

3 years ago

Read 2 more answers

What is the force of a 13kg ball that has been dropped and has fallen for 1 second?

ankoles [38]

Answer:

127.4 newtons

Explanation:

Assuming g = 9.8:

F = ma = 13(9.8) = 127.4 N

6 0

3 years ago

Neurons are most associated with<br> A. senses<br> B. eyesight<br> C. chevrolet

andriy [413]

Answer:

eyesight i think

Explanation:

i hope this helps you

3 0

2 years ago