Physics question on Newton's Laws!?

  • Thread starter Thread starter Sara Model
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Sara Model

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A(n) 81 kg clock initially at rest on a hor-
izontal floor requires a(n) 695 N horizontal
force to set it in motion. After the clock is in
motion, a horizontal force of 568 N keeps it
moving with a constant velocity.
The acceleration of gravity is 9.81 m/s2 .
a) Find ?s (coefficient of static friction) between the clock and the floor.
b) Find ?k (coefficient of kinetic friction) between the clock and the floor.
 
I was going to answer your qustion but I found myself against two qustions:
1- Why not talk about an object in general rather than a "Clock"?
2- Talking about 81 kg "Clock" I am getting worried if "Big Ben" has been borrowed for the purpose?
 
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