Whoever can keep the. 20m rope straight tied up to a wall 1m high with a suspended sack of 20 kg dog food at the middle of rope for 15 seconds wins the dog food. Is it possible for somebody to win? How? Explain

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

Frequency of electromagnetic waves that a radio station is assigned is called