Wednesday
October 1, 2014

Homework Help: Physics-Torques

Posted by Nicole on Tuesday, March 20, 2007 at 10:44pm.

Suppose you have a meter stick with two masses attached. The mass m1 is 0.60 kg and it is located at x1 = 30 cm from the left (zero) end of the meter stick. The pivot point is located at x = 45 cm. The mass of the meter stick (mms = 0.40 kg) is located at its geometric center, xms = 50 cm. The mass m2 is 0.25 kg and it is located at x2 = 80 cm from the left end of the meter stick. Calculate the net torque (in N⋅m with the proper sign) due to these three weights. Use g = 9.8 m/s2.

Mass m1 exerts a force m1*g at a distance of 15 cm (0.15 m) left of pivot point. That creates a counterclockwise torque of 0.6*9.8*0.15 N-m. The mass of the meter stick exerts a gravitational force ms*g through a piint 5 cm to the right of the pivot, creating a clockwise torque. Mass m2 exerts a force m2*g that is applied 35 cm to the right of the pivot.

All you have to do is compute the three torques and add them. Treat the counterclockwise torque as negative.

If you need more assistance with this one, please show your work.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics-torques - Suppose that a meter stick is balanced at its center. A 0.27-...
physics - A 65 g meter stick has two masses, each 250 g placed upon it. The ...
physics 2, help please - Two masses (mA= 2 kg, mB= 4 kg) are attached to a (...
College Physics - A uniform meter stick of mass M has an empty paint can of mass...
physics - A .100 kg meter stick is supported at its 40.0 cm mark by a string ...
physics - if the fulcrum of a .15 kg meter stick was placed at 25 cm and a 300 ...
physics - if the fulcrum of a .15 kg meter stick was placed at 25 cm and a 300 g...
physics - A meter stick is pivoted at its 50-cm mark but does not balance ...
Physics 1 - A meter stick has a mass of 200g and its center of gravity is at the...
PHYSICS - HELP - Two ingenious 120 student students decide to use an oscillating...

Search
Members