A wrench 0.3 meters long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of (0, 4, 1) at the end of the wrench. Find the magnitude of the force in newtons needed to supply 100 newton-meters of torque to the bolt. Force: newtons

A bowl is rotating on a potter's wheel at constant angular speed as shown. The friction force between his hands and the bowl is 1.70 N total. If the bowl has a diameter of 13.0 cm, how large is the torque on the wheel? Report a positive answer.

A 23 cm wrench is used to generate a troque at a bolt. a force of 51 N is applied at the end of the wrench at an angle of 51° to the wrench. The torque generated at the bolt is? Answer in N.m

In unit-vector notation, what is the net torque about the origin on a flea located at coordinates (0, -4.30 m, 7.74 m) when forces F = (3.80 N )k and F = (-7.82 N )Ĵ act on the flea? 2 Number i î i i k Units

A potter is shaping a bowl on a a potter’s wheel.  The wheel rotaes at a constant angular speed.  The frictional force between her hands and the clay is 2.25 N.  How large is the torque she produces on the wheel if the diameter of the bowl is 14 cm.

A wrench is used to apply a torque to a bolt. Forces F1 through F6 all have the same magnitude. The point of application of force F1 (and F4) is a distance d from the center of rotation of the bolt. The application points of F1, F2, and F3 are all distance d apart, as shown. Use the convention that counter-clockwise torques are positive; clockwise torques are negative. Determine the torque applied on the bolt by F6 in terms of the variables and angles given in the problem.

A door is 0.91 m wide, 2.0 m high, and 4.0 cm thick.  A "door closer" is attached to the door and the top of the door frame.  When the door is open and at rest, the door closer exerts a torque of 8.2 Nm.  What is the least force you need to apply to the door to keep it open?

Homework

A rectangular bar is hinged at point O.  The bar is 3.00 m long and 2.00 m wide.   Find the torque resulting from the following force about an axis through point O: F1 = 1 N. Use a positive for a counterclockwise torque and a negative for a clockwise torque.

A wrench 30 cm long is attached to a nut and bolt.  You exert a 15 N force on the wrench.  What is the maximum torque you can exert under these conditions?