Homework Statement
A block of mass 1.5 kg is placed against a horizontal spring of force constant k that is compressed .20 m. the spring is then released and the block travels to the right along a horizontal surface. The coefficient of kinetic friction between the block and the surface is 0.4...
Homework Statement
Example: A 50 kg gymnast does giant circles around a horizontal bar. At the top of her swing her center of mass is 1.0 m above the bar traveling 1.2 m/s. what is the speed of her center of mass at the bottom of her swing where her center at mass is 1.0 m below the bar? (...
Homework Statement
An automobile of mass 1000 kg is traveling 10 m/s. What force is necessary to accelerate it to 50 m/s in 8 sec?
Homework Equations
Used Sigma(F) = (m)(a)
Sigma F = force
m = mass
a = acceleration
The Attempt at a Solution
F = ma
Sigma F =...
Homework Statement
A sled is pulled over a horizontal surface where the kinetic coefficient of friction is .20. What is the minimum force necessary to keep the sled moving if its mass is 2 slugs?
Homework Equations
fs = Ns(mg)
The Attempt at a Solution
fs = (.20) (2 slugs) (32)...
Homework Statement
A sled is pulled at a constant speed over a horizontal surface where the kinetic coefficient of friction is .20. What is the minimum force necessary to keep the sled moving if its mass is 2 slugs?
Homework Equations
f(s)=U(s)N or f(s)=Ns(mg)
F(s)= Frictional Force...