Question

URRY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Four students are doing different friction experiments with a cylinder. 

Tristan is working with static friction,
Arya is working with sliding friction,
Anoush is working with rolling friction,
and Keran is working with fluid friction.

***Which most likely describes results from their experiments?

A. Tristan and Arya would exert more energy to overcome friction than Anoush and Keran. 
B. Tristan and Anoush would exert more energy to overcome friction than Arya and Keran. 
C. Tristan and Keran would exert less energy to overcome friction than Arya and Anoush. 
D. Tristan and Arya would exert less energy to overcome friction than Anoush and Keran

Answer 1

A. Tristan and Arya would exert more energy to overcome friction than Anoush and Keran.

Answer 2

Answer : Option A) Tristan and Arya would exert more energy to overcome friction than Anoush and Keran.

Explanation : Tristan is working with static friction and Arya is working with sliding friction; static friction works on the objects when they are resting on a surface, whereas sliding friction acts on objects when objects are sliding over a surface. Sliding friction is much weaker than the static friction as sliding is comparatively easy and uses less energy to move the objects.

And the rolling friction deals with the objects that are rolling over the surface which exerts less energy, also fluid friction acts on the objects that uses fluid for the friction purpose where the energy exertion is minimum.

Therefore, Tristan and Arya would need more energy to overcome static and sliding frictions respectively.