A strange vehicle (designed by a physics instructor) is composed of a wedge on w

Question

A strange vehicle (designed by a physics instructor) is
composed of a wedge on wheels. A wooden block sits on the
wedge. If the wedge accelerates too quickly the block will
slide up. If the wedge accelerates too slowly the block will
slide down. When the wedge accelerates at just the right
amount, a, the block does not slide. At this acceleration, a, the
normal force of the wedge on the block is 60.0 N. Assuming
that friction is negligible, determine (a) the mass of the block
and (b) the acceleration a

Explanation / Answer

since , wedge accelerates at just the right
amount, a, the block does not slide. At this acceleration,
normal force of the wedge on the block : N = 60.0 N Here , N = Mg = 60.0 N thus, Mass of the bolck = M = N / g                                                = 60.0 N /9.8 m/s2                                                = 6.122Kg Here , acceleration of the block is : a = 0            (since block doesn't moves )

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