A56.6 kg carpenter at a construction site plans to swing in a circular arc from one roof top to an adjacent roof at the end of a 12.8 meter rope suspended from a crane boom. if her wiry arms, toughened by years of driving spikes with a no. 22 framing hammer, are capable of exerting 1018 n of force on the rope, what is the maximum speed that she can tolerate at the low point of her swing? 15.2 m/s (t/f)

Answer

given,

mass of the carpenter = 56.6 Kg

length of the rope = 12.8 m

Force on the cable = 1018 N

maximum speed = ?

centripetal force =

                            =  

                            =  

gravitation force = m g = 56.6 x 9.8 = 554.68 N

 4.42 v² + 554.68  = 1018

  4.42 v² = 463.32

        v² = 104.82

        v = 10. 24 m/s

hence, maximum speed is equal to  v = 10. 24 m/s

 15.2 m/s speed is false.

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.