A 5.0 m massless rod is held in place at a pivot point. The rod has a small mass of 2.5 kgs attached to it. It is pulled up by an angle of 25 degrees from the horizon and then released. Required:
a. Rank the magnitude of the gravitational potential energy of the ball from greatest to lowest and explain your reasoning.
b. If friction is negligible what is the tension on the rod when + D the mass is at its lowest point?

If the area of a square has increased by a factor of 16, by how much has each side increased?

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j

What was the purpose of the apollo program? to put a man in orbit to launch a spy satellite to launch a space station to put man on the moon