All categories

3 years ago

Definition: The force applied when using a simple machine.

Physics

2 answers:

jek_recluse [69]3 years ago

8 0

the force applied when using a simple machine is called the effort force

kondaur [170]3 years ago

8 0

A simple machine uses a single applied force to do work against a single load force.

You might be interested in

An electric motor moves a chain that pulls the roller coaster car 180 meters to the top of the first hill. The chain exerts a fo

MrRa [10]

The energy added here is potential energy since it is moving upward 180 meters in a gravitational field. This is then turned into KE when it rolls down. 2524N x 180m = 454,320J

3 0

3 years ago

Read 2 more answers

Long periods of unusually low precipitation are called?

DiKsa [7]

I think it is called a drought but i would look it up

6 0

3 years ago

The flywheel of a steam engine runs with a constant angular velocity of 190 rev/min. When steam is shut off, the friction of the

Ivanshal [37]

Answer:

(a) $\alpha = - 1.32\ rev/m^{2}$

(b) $\theta = 13674\ rev$

(d) $a = 22.458\ m/s^{2}$

Solution:

As per the question:

Angular velocity, $\omega = 190\ rev/min$

Time taken by the wheel to stop, t = 2.4 h = $2.4\times 60 = 144\ min$

Distance from the axis, R = 38 cm = 0.38 m

Now,

(a) To calculate the constant angular velocity, suing Kinematic eqn for rotational motion:

$\omega' = \omega + \alpha t$

$omega'$ = final angular velocity

$\omega$ = initial angular velocity

$\alpha$ = angular acceleration

Now,

$0 = 190 + \alpha \times 144$

$\alpha = - 1.32\ rev/m^{2}$

Now,

(b) The no. of revolutions is given by:

$\omega'^{2} = \omega^{2} + 2\alpha \theta$

$0 = 190^{2} + 2\times (- 1.32) \theta$

$\theta = 13674\ rev$

(c) Tangential component does not depend on instantaneous angular velocity but depends on radius and angular acceleration:

$\alpha_{tan} = 0.38\times 1.32\times \frac{2\pi}{3600} = 8.75\times 10^{- 4}\ m/s^{2}$

(d) The radial acceleration is given by:

$\alpha_{R} = R\omega^{2} = 0.32(80\times \frac{2\pi}{60})^{2} = 22.45\ rad/s$

Linear acceleration is given by:

$a = \sqrt{\alpha_{R}^{2} + \alpha_{tan}^{2}}$

$a = \sqrt{22.45^{2} + (8.75\times 10^{- 4})^{2}} = 22.458\ m/s^{2}$

5 0

3 years ago

The edge effect in habitats are caused by:

uysha [10]

Answer:

A. habitat fragmentation

Explanation:

4 0

3 years ago

Read 2 more answers

Which material reflects the most light transparent, translucent, or opaque?

Svetradugi [14.3K]

There's no rule like that. A glass mirror is opaque but reflects
more light than a clean transparent glass window does.

On the other hand, a material that's transparent but shiny may
reflect more light than an opaque material that's painted black.

You can't give any general rule.

6 0

3 years ago