Question

1. Calculate the angular acceleration of an object that makes 500 revolutions in 5 seconds if it was initially at rest.

4. Look for the equatorial radius of the Moon, and its period of revolution Calculate the acceleration of an object that is on the lunar equator [You can use Google to quickly get the radius and period].

6. For the Same information from Problem 5, find the centripetal acceleration of a point that is on the edge of each pulley.

7. An object has a mass of 6 kg and is tied to a rope 80 cm long. The object moves in a vertical circular shape. Calculate the tension in the string when it passes through the bottom point of its path

Answer 1

ONE QUESTION AT A TIME PLEASE...PLEASE ABIDE BY THE GUIDELINES

1) Using rotational kinematics

500*2 = w_ot+ 1/2t²

as the object was initially at rest, we have

500*2 = 1/2t²

= 40 rev/sec² ( 1 rev = 2)

-----------------------------------------------------------------

4) SAME AS ABOVE

----------------------------------------------------------------

6) DEPENDS ON (5) WHICH YOU DIDN'T PROVIDE

---------------------------------------------------------------------------------------

7) I assume that you want to know minimum tension at the bottom

minimum velocity ar bottom

sqrt (5gr)

mv² / r = T - mg

m*5gr / r = T- mg

5mg = T - mg

T = 6mg

T = 352.8 N