Question

визначте роботу сили тертя, якщо сани масою 200 кг перемещались по горызонтальний дорози на 500 м. Коофициент тертя доривнюэ 0.1

Answer 1

A=F/S=Fтр/S=mgk/S=200×10×0.1/500=0.4 (Дж)

Answer 2

Determining the Force of Friction

To determine the force of friction, we need to use the equation:

Force of Friction = Coefficient of Friction * Normal Force

The coefficient of friction is given as 0.1, and the normal force can be calculated using the equation:

Normal Force = Mass * Gravity

where the mass is given as 200 kg and the acceleration due to gravity is approximately 9.8 m/s^2.

Let's calculate the force of friction step by step.

Calculating the Normal Force

The normal force is the force exerted by a surface to support the weight of an object resting on it. In this case, the normal force is equal to the weight of the sled.

Normal Force = Mass * Gravity

Substituting the given values:

Normal Force = 200 kg * 9.8 m/s^2

Calculating:

Normal Force = 1960 N

Calculating the Force of Friction

Now that we have the normal force, we can calculate the force of friction using the equation:

Force of Friction = Coefficient of Friction * Normal Force

Substituting the given values:

Force of Friction = 0.1 * 1960 N

Calculating:

Force of Friction = 196 N

Therefore, the force of friction acting on the sled is 196 N.

Please note that the above calculations assume that the coefficient of friction remains constant throughout the entire distance traveled. Additionally, this calculation only considers the force of friction on a horizontal surface and does not take into account any other forces that may be acting on the sled.