Sunday

April 20, 2014

April 20, 2014

Posted by **Cecelia** on Wednesday, March 30, 2011 at 1:30pm.

alturl. com/9snyy

1) A 180-N block rests on a frictionless inclined plane of slope angle 35°. A cord attached to the block passes over a frictionless pulley at the top of the plane and is attached to a second block. a) What must the weight of the second block be in Newtons if the system is in equilibrium? b) What is the mass of the second block in kilograms and in slugs?

1a) I got that the weight is 103 N. 2b) I got 0.07346 slug and 1.072 kg

2) A piece of angle iron is hinged as shown in (Figure 1): . Determine the resultant torque at the hinge due to the two acting forces. The top arm is 12 cm long, the bottom arm is 10 cm.

2a) I got 5.72 N x m

3) What force T at an angel of 30° above the horizontal is required to drag a 60-lb chest to the right at constant speed if μk=.22?

3a) I got tension = 17

4) Compute the center of gravity of the barbell system drawn in Figure 3. Assume the weight of the 36-in connecting rod is negligible.

4a) I got the center of gravity as being 13.8 in.

**Related Questions**

math - Can someone please help me on these I have look at the examples and done ...

science - I am not really sure about the cell thing, I am just not really ...

math help - Use the following table to answer the questions. (Give your answers ...

Algebra - - ok... we keep getting this one wrong: Solve the following equation ...

Algebra 2/Trig - We just started logarithms and exponential functions, and I'm ...

English (grammar) - Is this statement correct? "Helping other people contributes...

physics - Vector V1 is 8.58 units long and points along the -x axis. Vector V2 ...

Genetics - Hi can anyone help me answer these questions? I think I may have the ...

body systems - Could anyone tell me if nervous tissue is present in blood ...

calc - f(x)=8cos4x What is the derivative? Im doing online homework and i keep ...