A horizontal force with a magnitude of 30 N pushes a block which has a mass...

A horizontal force with a magnitude of 30 N pushes a block which has a mass of 4.19 kg on the floor which has a coefficient of kinetic friction of 0.51.
How many Joules of work does the force do to the floor-beam system as the block travels 3.86 m along the floor?
During movement on the floor, the heat energy in the block increases by 39.5 J. What is the Joule of increase in heat energy in the floor?
How many Joules is the increase in the kinetic energy of the block during the move?

Solutions

Expert Solution

Here work done by the force will be utilised in increasing kinetic energy of the Block and energy loss agaifriction work done.

here the Energy Lost in friction will result in heating the floor as well as the block. So we can say That, Heat energy developed in the floor + Heat energy developed in the block= - Work done by friction.

see the detailed solution below

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genius_generous answered 1 year ago

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