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A 100kg mass is pulled along a frictionless surface by a horizontal force such that its acceleration is 6m/s2?

"A 100 kg mass is pulled along a frictionless surface by a horizontal force F such that its acceleration is 6.0 m/s2. A 20 kg mass slides along the top of the 100 kg mass and has an acceleration of 4.0 m/s2. (It thus slides backward relative to the 100 kg mass.)

 

(a) What is the frictional force exerted by the 100 kg mass on the 20 kg mass?

(b) What is the net force acting on the 100 kg mass?

What is the force F?

(c) After the 20 kg mass falls off the 100 kg mass, what is the acceleration of the 100 kg mass? (Assume that the force F does not change.)"

Answers (6)

doggy 05-03-2013
== 1µC
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shantanu_85 07-05-2013
"A 100 kilogram mass can be pulled along a frictionless surface area with a horizontally force Y in ways that its acceleration is actually 6.1 meters/s2. A something like 20 kilogram aggregate slides across the the surface of the a hundred kilo aggregate and has a great speeding of three.1 m/s2. (The item thence photo slides backward in accordance with your c kilo bulk.) "
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