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2 years ago

What is wheel. and axle? Explain its structure with the help of a diagram

Physics

1 answer:

nadya68 [22]2 years ago

4 0

Answer:

The wheel and axle consist of a round disk, known as a wheel, with a rod through the centre of it, known as the axle. This system uses angular momentum and torque to do work on objects, typically against the force of gravity. The wheel and axle simple machine is closely related to gears.

Explanation:

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A 77.0−kg short-track ice skater is racing at a speed of 12.6 m/s when he falls down and slides across the ice into a padded wal

sukhopar [10]

Answer:

-6112.26 J

Explanation:

The initial kinetic energy, $KE_i$ is given by

$KE_i=0.5mv_1^{2$ } where m is the mass of a body and $v_i$ is the initial velocity

The final kinetic energy, $KE_f$ is given by

$KE_f=0.5mv_f^{2}$ where $v_f$ is the final velocity

Change in kinetic energy, $\triangle KE$ is given by

$\triangle KE=KE_f-KE_i=0.5mv_f^{2}-0.5mv_1^{2}=0.5m(v_f^{2}-v_i^{2})$

Since the skater finally comes to rest, the final velocity is zero. Substituting 0 for $v_f$ and 12.6 m/s for $v_i$ and 77 Kg for m we obtain

$\triangle KE=0.5*77*0^{2}-0.5*77*(0^{2}-12.6^{2})=-6112.26 J$

From work energy theorem, work done by a force is equal to the change in kinetic energy hence for this case work done equals -6112.26 J

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2 years ago

What is the process called when the moon begins to fade from a full moon to the new moon?

nataly862011 [7]

Waning is what it’s called

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2 years ago

Sketch the solid whose volume is given by the integral and evaluate the integral. $ \int_{0}^{{\color{red}6}}\int_{0}^{2\pi }\in

Serggg [28]

Answer:

Explanation:

Attached is the evaluation

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2 years ago

A ballon filled with air bursts when it rises up in the sky why

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Answer:

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Explanation:

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2 years ago

What is Newton's Second Law of Motion? (2 points) Every reaction is equal to the force applied. Forces are balanced when they ar

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Well, they're not quite the way Newton expressed it, but out of all this mess of statements, there are two that are correct AND come from Newton's 2nd Law of Motion:

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-- The greater the force applied, the greater the acceleration.

For the other statements in the question:

-- Every reaction is equal to the force applied. True; comes from Newton's 3rd law of motion.

-- Forces are balanced when they are equal and opposite. True; kind of a definition, not from Newton's laws of motion.

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2 years ago

What is wheel. and axle? Explain its structure with the help of a diagram​

What is wheel. and axle? Explain its structure with the help of a diagram