a ramp 20 m long and 4 m high is used to lift a heavy box. a pulley system with 4 rope sections supporting the load is used to lift an identical box to a height of 4 m. if friction is ignored, the ramp requires a to lift the load.

The slotted link is pinned at o, and as a result of rotation it drives the peg p along the horizontal guide. compute the magnitude of the velocity and acceleration of p along the horizontal guide. compute the magnitudes of the velocity and acceleration of p as a function of θ if θ=(3t) rad, where t is measured in seconds.

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

Name two kinds of practical electric pumps.