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In this problem, we will consider the following situation as depicted in the diagram: A block of mass m slides at aspeed v along a horizontal smooth table. It next slides down a smooth ramp, descending a height h, and thenslides along a horizontal rough floor, stopping eventually. Assume that the block slides slowly enough so that itdoes not lose contact with the supporting surfaces (table, ramp, or floor). You will analyze the motion of the block at different moments using the law of conservation of energy. which word in the statement of this problem allows you to assume that the table is frictionless?

Sagot :

In the problem, it was stated that "a box of mass m slides at a speed v along a horizontal, smooth table", the word "smooth" allow us to assume that the table is frictionless.

Frictionless surface is a surface with little to almost none friction. Frictionless surface alllows the force acting on any object which makes it difficult fo the object to slide or the friction force is almost zero or negligible. In the real world, there is no such a thing called frictionless surface, artificially the smoothest surface will have some friction at some locations.

Friction force is the force that opposes the sliding movement of an object accross another object or surface. The friction force direction will always be the opposite of the motion of an object. Friction force can be divided into 2 kinds:

  • Static friction
  • Kinetic friction

Static friction is the friction force working on an object when an object is not moving. Static friction keeps an object stay still and resists any force working on an object. However, when the force given to an object increase and the object start to move, static friction is no longer working in the system.

Kinetic friction is the friction force working on an object when an object is moving. Kinetic friction allows an object to slow down when the force is released.

Generally, static friction is greater than kinetic friction.

Learn more about Friction Force here: https://brainly.com/question/1714663

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Complete Question:

In this problem, we will consider the following situation as depicted in the diagram (Figure 1) : A block of mass m slides at a speed v along a horizontal, smooth table. It next slides down a smooth ramp, descending a height h, and then slides along a horizontal rough floor, stopping eventually. Assume that the block slides slowly enough so that it does not lose contact with the supporting surfaces (table, ramp, or floor).

You will analyze the motion of the block at different moments using the law of conservation of energy.

(Please refer to the diagram below)

Which word in the statement of this problem allows you to assume that the table is frictionless?

View image Diatrhi
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