Recent content by hieule

yeah, got the answer, thanks

Two wires are tied to the 2.0 kg sphere shown in the figure View Figure . The sphere revolves in a horizontal circle at constant speed. For what speed is the tension the same in both wires? What is the tension? I reallllly need some hints to figure the first part, and the second...

that's my problem. i couldn't simplify it correctly. i simplified it to be (2D(VwVr)-D/2(Vr+Vw)(Vw+Vr))/((Vw+Vr)(VwVr)) but this is not the answer

Tim and Rick both can run at speed v_r and walk at speed v_w, with v_r greater than v_w. They set off together on a journey of distance D. Rick walks half of the distance and runs the other half. Tim walks half of the time and runs the other half. the time it takes tim to cover the distance...

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant net acceleration a, until time t_1, when the fuel is exhausted. Find the maximum height H that the rocket reaches (neglecting air resistance). Express the maximum height in terms of a, t_1, and/or...