(ii) and (iii)
(i) and (iv)
(ii) and (iv)
(i) and (iii)

## Applied Mechanics and Graphic Statics If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, theni. a force is required to move the body upwardsii. a force is required to move the body downwardiii. the body will not be in equilibriumThe correct answer is

only (i)
only (ii)
both (i) and (ii)
both (i) and (iii)

## Applied Mechanics and Graphic Statics The torque produced by a force depends oni. the magnitude of the forceii. the direction of the forceiii. the point of application of the force relative to originThe correct answer is

all (i), (ii) and (iii)
only (i)
both (i) and (ii)
both (i) and (iii)

0.5 m/sec²
0.75 m/sec²
1.25 m/sec²
1.00 m/sec²

## Applied Mechanics and Graphic Statics One end of an elastic string of natural length / and modulus X is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance x, held at rest and then released. The motion is

a rectilinear motion with constant speed
a damped oscillatory motion
None of these
a simple harmonic motion