A steel I-beam is 12.0 m long. It is supported at its center by a cable at a construction site is undergoing torsional oscillations. Two workers, each of mass 85 kg, jump on opposite ends of the beam. If the frequency of the oscillations decreases by 25%, what is the mass of the beam

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_