a)An object of mass ?m rests on a horizontal frictionless surface. A constant horizontal force of...

a)An object of mass ?m rests on a horizontal frictionless surface. A constant horizontal force of magnitude ?F is applied to the object. This force produces an acceleration:

always
only if ?F is larger than the weight of the object
only while the object suddenly changes from rest to motion
only if ?F is increasing

choice A

b)Now let there be friction between the surface and the object. If the object has a mass of 10 kg, and ??μs = 0.4, and ??=0.3μk=0.3, how much force would be required to cause the object to move?

c)If this force is then applied continuously, how far will the object be displaced after 4.8 seconds?

d)How fast will it be going after pulling with the same force above for 4.8 seconds?

Solutions

Expert Solution

genius_generous answered 1 month ago

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