Two boxes need to be moved into storage jamel and jude each want to move a box. the force of gravity on both the boxes is 50 n. jamal is lifting with a force of 60 n. and jude is lifting with a force of 45 n. which best describes the movement of the boxes

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes