the whole problem reads this. two 10 kilogram boxes are connected by a massless string that passes ocer a massless frictionless pulley as shown above( this would be the picture on the other problem) The boxes remaine at rest, with one on the right hanging vertically and the one on the left...
Homework Statement
determine the magnitude of the frictional force acting on the box on the plane
Homework Equations
f=ma
The Attempt at a Solution
no clue. help ??
Homework Statement
What is the tension T in the string?
Homework Equations
Is their an equation for tension. not in my book?
The Attempt at a Solution
im soo lost.
Homework Statement
A car needs to generate 75 hp in order to maintain a constant velocity of 27.3m/s on a flat road. What is the magnitude of the total resistive force acting on the car. (due to friction,air resistance etc.)
Homework Equations
1hp=746 watts
The Attempt at a Solution...
Homework Statement
a 480kg car moving at 14.4m/s hits a another car from behind moving at 13.4m/s in the same direction. if the second car has a mass of 570kg and a new speed of 17.9m/s what is the velocity of the first car after the collision??
Homework Equations
m1*v1=m2*v2
doubt...