How high must you lift a 50 kg anvil in order for it to have 10,000 J of potential energy?

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

Could someone . i have tried to solve myself but my calculation is off

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational