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

240Nm

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

b.

explanation:

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