Question

A heavy bank-vault door is opened by the application of a force of 300 N directed perpendicular to the plane of the door at a distance of 0.80 m from the hinges. What is the torque?

Question 4 options:

1.) 120 Nm
2.) 240 Nm
3.) 375 Nm
4.) 300 Nm

Answer 1

240Nm

Step-by-step explanation:

Given parameters:

Force on the bank vault = 300N

Distance to the plane of the vault = 0.8m

Unknown:

Torque = ?

Solution:

Torque is the component of force that causes an object to rotate about an axis;

Torque = Fr x sinФ

Here Ф = 90°

r = distance

Torque = 300 x 0.8 x Sin 90°

Torque = 240Nm