Question

A nut has been tightened by a force of 180 N using an 8 cm long spanner. What length of a spanner is required to loosen the same nut with 150 N?
(a): 11 cm
(b): 8.5 cm
(c): 9.6 cm
(d): 10.9 cm

Answer 1

Answer:

here the torque required to tighten or loosen the nut will be same

Explanation:

now applied to tight the nut

T=force×its perpendicular length

T=(180N)(0.08m)

=14.4Nm

14.4=(150N)(length )

length=14.4/150

=0.096m

=9.6cm