I need help with number 1 and 3 Use equation (19.13) and compute the lever arm r

Question

I need help with number 1 and 3

Use equation (19.13) and compute the lever arm r_2. The centre of gravity is located in the position d + r_2 from the left end of the meter stick. Record this position in Data Table 19.3. Make this calculation for the non- uniformand uniform meter stick. Find the average for the location of the centre of gravity for the non- uniformand uniform meter stick. Explain how it is possible for a large force to produce a small torque, and how it is possible for a small force to produce a large torque. Find the tension force in the cord supporting the meter stick for each part of the experiment. Explain how the first Condition of Equilibrium (19.1) is satisfied for the meter stick in each part of the experiment. What is the condition for the static equilibrium of a rigid body?

Explanation / Answer

1)

For a large force small torque is produced It depends on the perpendicular distance.

If you apply a force that is on the same line of action, the force is said to be perpendicular, meaning that the cos(90) is 0. Therefore the force is nothing doing anything to the object

Small force can produce large torque if the arm of the moment in the case of small force is sufficiently large

3)conditions for static equilibrium of rigid body are

Vector sum of forces acting on body should be 0

Vector sum of torque acting on object should be zero

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