One end of a meter stick is pinned to a table, so the stick can rotate freely in

Question

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 62.8oangle 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.

Explanation / Answer

You just need to resolve the force applied into its rectangular components. The force applied perpendicular to the stick is F * sin69.3 = 6 * 0.935N = 5.61 N

Now the torques are balanced.

Torque 1:
F = 2 N
d = 1 m (Since it is a meter scale)
Torque = 2 Nm

Torque 2:
F = 5.61 N
d = ?
Torque = 2 Nm

Therefore
2 = 5.61 * d
d = 0.356 m form the point

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.