The total mechanical energy of an object is the *
a.)ke minus the pe of the object
b.)pe minus the ke of the object
c.)pe minus the ke of the object
d.)ke plus the pe of the object at any instant during its motion
e.)final amount of ke and pe minus the initial amount of ke and pe

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?