A block of mass m = 2.6 kg slides on a horizontal rough surface into a spring of spring constant k = 456 Nim, as shown in Figure. When
the block is x = 1 meter away from the spring, it has a velocity43
m/s. When the block stops, it has compressed the spring by 58 cm
What is the coefficient kinetic friction between the block and the su
Provide your answer with 2 decimal places.
Take g = 9.81 m/s2
V
X

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

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?

In which of the following is positive work done by a person on a suitcase