The ornamental design for a weightplate for use with an exercise apparatus, shown and described.
FIG. 1 is a front perspective view of a weight plate for use with an exercise apparatus constructed in accordance with the invention, an illustrated in conjunction with an exemplary environmental exercise apparatus shown in dotted lines;
FIG. 2 is a front elevation view of the weight plate illustrated in FIG. 1; and,
FIG. 3 is a bottom plan view of the weight plate illustrated in FIG. 1.
The weight plate is generally symmetrical with respect to a vertical plane extending from its front surface to its back surface through its center. The back surface is not part of the claimed design. The dotted line portions of the disclosure are for illustrative purposes only and form no part of the claimed design.