Homework Statement
A 270-kg load is lifted 21.0 m vertically with an acceleration a=0.150 g by a single cable.
A)Determine the tension in the cable.
B)Determine the net work done on the load.
C)Determine the work done by gravity on the load.
D)Determine the final speed of the load assuming...
it still continues to say that it is incorrect, which makes no sense bc i know i did it correctly, i have no other way to get another answer. i don't know what is wrong with my answer.
Homework Statement
How much work is required to stop an electron (m=9.11×10−31kg) which is moving with a speed of 1.40×10^6 m/s ?
2. Homework Equations The Attempt at a Solution
E.g a particle has KE=10J. The work that must be done on it to stop it is -10J.
So work out the kinetic energy...
Homework Statement
If the coefficient of static friction is 0.38 (wet pavement), at what range of speeds can a car safely make the curve? [Hint: Consider the direction of the friction force when the car goes too slow or too fast.]
Homework Equations
I am trying to figure out the Vmax
3. The...