A2 kg mass is raised to a height of 2m.
- how much work was done on the mass?
- if the mass is released, how fast will it be traveling after falling for 2m if air resistance is ignored?

Describe the path of a ray that approaches a mirror parallel to the principal axis.

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Determine the maximum r-value of the polar equation r =3+3 cos 0