Posted by mariz on Saturday, July 30, 2011 at 8:44am.
For horizontal surfaces,and constant speed,
M*g*uk = F
uk is the kinetic friction coefficient.
Both questions can be answered using that formula. Try it.
In your second question (last sentence), you omitted the word "if" after "required". Be more careful copying your questions.
Related Questions
Physics - If the coefficient of kinetic friction between a 35 kg crate and the ...
phyzzzics - I NEED ANSWERS AND HOW YOU GOT IT~!! 3. If you use a horizontal ...
11th grade - If the coefficient of kinetic friction between a 30 kg crate and ...
physics - If you use a horizontal force of 30.0 N to slide a 11.5 kg wooden ...
Physics - A warehouse employee used a cable to pull a 125 kg crate across the ...
Physics - Search: The figure shows three crates being pushed over a concrete ...
Physics - 1.A 24 kg crate initially at rest on a horizon floor requires a 75 N ...
physics - To move a large crate across a rough floor, you push on it with a ...
Physics - A 1060 N crate is being pulled across a level floor by a force F of ...
physics - You push a large 32 kg crate across the floor with a force F=330 N at ...
For Further Reading
