Questions on Moments

Q5. Sirius is trying to release a nut with a spanner.

The diagram shows the size of the force he is exerting and where this force acts on the handle.

(a) The spanner applies a moment, or turning effect, to the nut. Calculate the size of this moment or turning effect.

Moment = Fd

Moment = 90 N x 7 cm

Moment = 630 N cm

(2 marks)

(b) Give two ways in which Sirius could increase the moment he applies using this spanner.

Increase the force he applies or apply the force further from the nut

(2 marks)

Total 4 marks