Suppose a ruler balances at 37.1 cm with a total mass of 170.7 g as the counterweight. If the center of gravity of the ruler is at 50.6 cm, what is the mass of the ruler?
Express your answer to three significant figures and in units of grams
The ruler balances at 37.1 cm mark on the ruler.
The hanging mass (counter weight ) is M = 170.7 gm is at mark on the ruler.
( you didn't give me procedure so i take 20 cm mark on the rular )
Center of gravity of ruler is at 50.6 cm mark ,
Mass of ruler is .
considering the torques about the point where the rules is balanced,
Mg*(37.1 - 20) = mg*(50.6 - 37.1 )
170.7*(37.1 - 20) = m *(50.6 - 37.1)
170.7*17.1 = m*13.5
m = 216.22 gm
Mass of the ruler m = 216.22 gm
Suppose a ruler balances at 37.1 cm with a total mass of 170.7 g as the...
A 60 cm ruler, which has 10 g weight, is on the pivot at 19cm point of the ruler. The center of gravity for the ruler is at 29 cm point. You have a 20 g weight to balance the ruler. At what point of the ruler you will hang the weight to make the system equilibrium? (The ruler will not move on the pivot, one mass system) 19 cm @ 29 cm Ruler Length = 60 cm Ruler Ruler...
A uniform meter stick (a ruler 100 cm long) is supported by a fulcrum at its 20 cm mark balances when a 200 g mass is suspended at the 0 cm end. Assume that the center of mass of the meter stick is exactly at its middle, the 50 cm mark. Determine the mass of the meter stick, in grams. Please show your work.
The mine car and its contents have a total mass of 7.2 Mg and a center of gravity at G. The coefficient of static friction between the wheels and the tracks is ?s = 0.4 when the wheels are locked. The brakes at both Aand B are locked. (Figure 1) (A) Find the normal force acting on the front wheels at B. Express your answer to three significant figures and include the appropriate units. (B) Find the normal force acting...
A 170 g mass attached to a horizontal spring oscillates at a frequency of 3.10 Hx. Att=0s, the mass is at 6.00 cm and has , - 42.0 cm/s. Determine: The maximum speed Express your answer to three significant nd include of op units. OP OO Value Units Submit Request Answer Part F The maximum acceleration. Express your answer to three significant figures and include the appropriate units. ? MAO Value Units Submit Request Answer Part G The total energy...
A ruler, balanced at its center point, has two coins placed on it, as shown in the figure. (Intro 1 figure) One coin, of mass M_1= 10g, is placed at the zero mark;the other, of unknown mass M_2, is placed at the 4.7 mark. The center of the ruler is at the 3.0 mark. The ruler is in equilibrium; it is perfectly balanced.[IMG]http://i40.tinypic.com/15cj2g9.jpg[/IMG]http://tinypic.com/view.php?pic=15cj2g9&s=5A)Does the pivot point (i.e., the triangle, in the diagram, upon which the ruler balances) exert a force...
A guitar string is 90 cm long and has a mass of 3.5 g. The distance from the bridge to the support post is L= 62 cm, and the string is under a tension of 520 N. Part A What are the frequencies of the fundamental and first two overtones? Express your answers using two significant figures. Enter your answers in ascending order separated by commas. ΟΙ ΑΣΦ ? $1,12,13 = Hz When you slosh the water back and forth...
The jet aircraft has a total mass of 23 Mg and a center of mass at G. Initially at take-off the engines provide a thrust 2T = 6 kN and T' = 2.5 kN. Neglect the mass of the wheels and, due to low velocity, neglect any lift caused by the wings. (Figure 1) Part A Determine the magnitude of the acceleration of the plane. Express your answer to three significant figures and include the appropriate units. i o ?...
Part The mine car and its contents have a total mass of 7.2 Mg and a center of gravity at G. The coefficient of static friction between the wheels and the tracks is M = 0.4 when the wheels are locked. The brakes at both A and B are locked. (Figure 1) Find the normal force acting on the front wheels at B. Express your answer to three significant figures and include the appropriate units. NsValue KN Submit Previous Answers...
Calculate the mass percent (m/m) of a solution prepared by dissolving 45.46 g of NaCl in 170.7 g of H2O. Express your answer to four significant figures.
F=G m1m2/ d2 Calculate the force of gravity on the 1.5-kg mass if it were 1.3×107 m above Earth's surface (that is, if it were three Earth radii from Earth's center). Express your answer to two significant figures and include the appropriate units.