The simple 2-kg pendulum is released from rest in the horizontal position. as it reaches the bottom position, the cord wraps around the smooth fixed pin at b and continues in the smaller arc in the vertical plane. calculate the magnitude of the force r supported by the pin at b when the pendulum passes the position theta = 30o .

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth's center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

What are the north and south poles of a solenoid change with?