1- You are installing a new spark plug in your car, and the manual specifies that it be tightened to a torque that has a magnitude of 38 N · m. Using the data in the drawing, determine the magnitude F of the force that you must exert on the wrench.

1- You are installing a new spark plug in your car, and the manual specifies that it be tightened to a torque that has a magnitude of 38 N · m. Using the data in the drawing, determine the magnitude F of the force that you must exert on the wrench. N
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2- A square, 0.80 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. The axis is perpendicular to the plane of the square. A force of 15.6 N lies in this plane and is applied to the square. What is the magnitude of the maximum torque that such a force could produce? N · m
3- One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a magnitude of 2.00 N and is applied perpendicular to the length of the stick at the free end. The second force has a magnitude of 6.00 N and acts at a 22.9° angle with respect to the length of the stick. Where along the stick is the 6.00-N force applied? Express this distance with respect to the end of the stick that is pinned. d=
4- N The drawing shows a lower leg being exercised. It has a 53-N weight attached to the foot and is extended at an angle θ with respect to the vertical. Consider a rotational axis at the knee.
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(a) When θ = 90.0°, find the magnitude of the torque that the weight creates. N · m (b) At what angle θ does the magnitude of the torque equal 15 N · m?