What is the formula for the acceleration of the hanger in terms of the tension t, the hanger's mass m, and the acceleration of gravity g? the key for the formula entries assumes the following: t and g are positive numbers. assume the downward direction for the hanger is positive. ahangera h a n g e r =

Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

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?