Question

A cyclist comes to a skidding stop within 10 m . During the process , the force on the cycle due to the road is 250 N and is directly opposed to the motion. How much work does the road do on the cycle.​

Answer 1

AnswEr :

• The work done the road do on the cycle = 2500 Joules.

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Explanation :

We are given with the displacement as well as force on the cycle due to the road, that is,

• Displacement, s = 10 m.

• Force, F = -250 N 〈opposite in direction〉

We have to find out the work done the road do on the cycle.

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As we are given with displacement and force on the cycle due to the road$.$

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We know that, if we are given with displacement and force on the cycle due to the road we have to required formula, that is,

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→ W = Fs

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Substituting the given values in the formula :

⇒ W = -250 × 10

⇒ W = -2500

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【NOTE :- Negative sign indicates that teh work done is done in opposite.】

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Hence, the work done the road do on the cycle is 2500 Joules.

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⠀⠀⠀ Additional information :

Learn about work done :

• Work done is the product of force and displacement.

• Work done is represented as W.

• The SI unit of work done is Joules (J).

• The other units of work done is Foot-pound, Erg.

• The derivations from other quantities are W = Fs and W = τθ.

Answer 2

Answer:

Answer:

Given :-

Force (F) = -250 N

Displacement (D) = 10 M

To Find :-

Work done

Solution :-

As we know that work done is the product of displacement and force

$\huge \bf \dag \: W = fs \dag$

Here,

W = Work done

F = Force applied

S = Displacement

\rule {202}{6}

W = -250 × 10

W = -2500 J

• Negative sign indicate that the work done in opposite.

Extra Knowledge

Newton - Newton is the unit of force.

Joule - Joule is the unit of energy.