a 1.67kg ball is atached to a ceiling by a 1.29m long string. the height of the room is 3.08m. the acceleration of gravity is 9.81 m/s^2. what is the gravitational potential energy associated with the ball relative to the ceiling?
2 answers
gpe= mgh= mg*(-1.29)
-1.67*9.81*1.29 joules
The height of the room does not matter. Note the minus sign, because the potential energy is being refered to a higher elevationm (the ceiling).
The height of the room does not matter. Note the minus sign, because the potential energy is being refered to a higher elevationm (the ceiling).
1 answer