# A level south west regional mock gce 2022 further mathematics 1

### A level south west regional mock gce 2022 further mathematics 1

A level south west regional mock gce 2022 further mathematics 1

37 Which one of the following is not true about D) 1
determinants?
41 If a flywheel loses kinetic energy amounting 640 J
when its angular velocity drops from 5 rads-1 to
3 rads-1, then the moment of inertia of the
flywheel is
A) The sign of the value of the determinant
changes when two rows are interchanged
B) The value of the determinant changes when a
row or column is added to another row or
column
A) 40 kgm2
B) 80 kgm2
C) 320 kgm2
D) 640 kgm2
C) The value of the determinant remains constant
when a multiple of a row is added to or
subtracted from another row or column.
D) The value of the determinant is zero if any two
rows or columns are identical 42 Given that the moment of inertia of a rod of mass
m and length 21 about an axis through its centre
and perpendicular to the rod is /,then the moment
of inertia about a perpendicular axis on the rod
distant x from the centre of the rod is
38 The matrix of the transformation T given by