1). Suppose you needed to raise a 250-kg mower a distance of 6.0 cm above the ground to change a tire. If you had a 2.0-m long lever.

Please solve both 1 and 2 I have about 40min time left

1). Suppose you needed to raise a 250-kg mower a distance of 6.0 cm above the ground to change a tire. If you had a 2.0-m long lever.

A. Where would you place the fulcrum if your force was limited to 300 N? distance from your hand to the fulcrum is:

B. What is the Final Potential Energy of the Mower in Jouls?

C. What is the total Work done by you in Joules?

D. How much distance your hand had to move to raise the mower?

2) Three children are riding on the edge of a merry-go-round that is 100 kg, has a 1.60-m radius, and is spinning at 20.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg.

A. What is the angular velocity in rad/s

B. Calculate the total moment of inertia

C. If the child who has a mass of 28.0 kg moves to the center of the merry-go-round

What is the new moment of inertia?

D. What is the new angular velocity in rad/s?

E. What is the new angular velocity in rpm?