Homework Help: physics

Posted by Josh on Tuesday, December 18, 2012 at 8:52pm.

The coefficients of static and kinetic friction between a 50 kg box and a horizontal surface are 0.64 and 0.17, respectively.
(a) What is the acceleration of the object if a 335 N horizontal force is applied to the box?
m/s2

(b) What is the acceleration if the applied force is 465 N

physics - drwls, Tuesday, December 18, 2012 at 10:42pm
(a) It takes a force of 0.64 M g = 314 N to make it move, so it will move in this case. The kinetic friction force opposing motion will be
0.17 M g = 83 N. The net applied force is
Fnet = 335 - 83 = 252 N
Acceleration = Fnet/M = 5.04 m/s^2

(b) The method of solution is the same.

Answer this Question

Related Questions

Physics - The coefficients of static and kinetic friction between a 50 kg box ...
Physics - A student wants to determine the coefficients of static friction and ...
PHYSICS - A student wants to determine the coefficients of static friction and ...
physics - Posted by norm on Monday, March 15, 2010 at 9:21am. What is the ...
Physics - A 10-kg wooden box rests on a ramp that is lying flat. The coefficient...
Physics - A 3.66 kg block is placed on an inclined surface that makes an angle ...
physics - A dockworker loading crates on a ship finds that a 21-kg crate, ...
physics - A dockworker loading crates on a ship finds that a 21-kg crate, ...
Physics - A dockworker loading crates on a ship finds that a 23-kg crate, ...
physics - A dockworker loading crates on a ship finds that a 25 kg crate, ...

For Further Reading

First Name:
School Subject:
Answer: