Jim is playing with a 1-meter-long pendulum that is hooked
2 meters above the ground. He lifts the pendulum's bob to a height of 2 meters above the ground and then releases it. Potential energy is assigned zero value at the ground level. Which statement is true about this problem?

a) at the lowest position of the bob, the KE is equal to zero.
b) at the highest position of the bob, the PE is equal to zero.
c) at the highest position of the bob, the KE is equal to zero.
d) at all the positions except the highest positions the PE is zero.

Question

Jim is playing with a 1-meter-long pendulum that is hooked
2 meters above the ground. He lifts the pendulum's bob to a height of 2 meters above the ground and then releases it. Potential energy is assigned zero value at the ground level. Which statement is true about this problem?

a) at the lowest position of the bob, the KE is equal to zero.
b) at the highest position of the bob, the PE is equal to zero.
c) at the highest position of the bob, the KE is equal to zero.
d) at all the positions except the highest positions the PE is zero.

anonymous · Answer

at highest position, all energy is P.E (more than zero). at the lowest position energy is  converted to K.E. . Hence -   (c)

anonymous · Answer

i love zombies too.. possibly i'm one myself.. being awake at 4:40 in the morning ;)

anonymous · Answer

haha well you are one smart zombie haha.

anonymous · Answer

ooo..then i'll have to act dumb or else other zombiles would eat me .. yarp..narp..yarp..narp