A truck has been fitted with a tilt bed. It has a 500 kg crate on the bed, which has been elevated to 30°. Determine the smallest acceleration of the truck necessary to slide the crate off the bed. The static coefficient of friction between the crate and the bed is 0.6. Draw clear and complete FBD and kinetic diagrams. Assume there is no tipping of the crate.

In all trials, the magnitude of the final velocity for g1 + g2 was less than the magnitude of any initial velocity. as mass increased, what happened to the velocity? the velocity decreased. the velocity increased. the velocity of g1 + g2 could not be measured. the velocity was not affected by the mass increase.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.