Use g = 10 m/s/s in the following problems. A). A 500 gram meter stick has a center of mass at the 50 cm mark. You place a pivot at the 40 cm mark. How much mass must you hang at the 10 cm mark to balance the system? B). A 500 gram meter stick has a center of mass at the 50 cm mark. You place a pivot at the 20 cm mark. How much mass must you hang at the 10 cm mark to balance the system?

Use g = 10 m/s/s in the following problems. A). A 500 gram meter stick has a center of mass at the 50 cm mark. You place a pivot at the 40 cm mark. How much mass must you hang at the 10 cm mark to balance the system? B). A 500 gram meter stick has a center of mass at the 50 cm mark. You place a pivot at the 20 cm mark. How much mass must you hang at the 10 cm mark to balance the system?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 28P: A bowling ball rolls up a ramp 0.5 m high without slipping to storage. It has an initial velocity of...

See similar textbooks

Similar questions

Use g = 10 m/s/s in the following problems. A). A 250 gram meter stick has a center of mass at the 50 cm mark. You place a pivot at the 50 cm mark and hang 100 grams at the 40 cm mark. How much mass must you hang at the 90 cm mark to balance the system? B). A 250 gram meter stick has a center of mass at the 50 cm mark. You place a pivot at the 50 cm mark, hang 100 grams at the 40 cm mark and hang 200 grams at the 30 cm mark. How much mass must you hang at the 90 cm mark to balance the system?
3. A meter stick has a pivot that is located in the middle (50 cm). On this meter stick we place 150 g @ 32 cm, 300 g @ 45 cm, 100 g @80 cm and 300 g @80 cm. a. How much mass needs to be placed at 55 cm in order to balance the meter stick. b. Where will you put 500 g in order to balance the meter stick?
A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 3.89 g coins stacked over the 31.9 cm mark, the stick is found to balance at the 40.9 cm mark. What is the mass of the meter stick? Number i Units g
Use g=10m/s/s A 500 gram meter stick has a center of mass at the 50 cm mark. You place a pivot at the 60 cm mark and hang 100 grams at the 70 cm mark. How much mass must you hang at the 90 cm mark to balance the system?
1. A carnival ride consists of a hollow cylinder spinning about a vertical axis. As the cylinder spins with a speed vo, a person of mass M rides the inside wall of the cylinder without slipping down (there is no floor). The distance of the center of mass of the person from the axis of the cylinder is R. a. Draw the free body diagram of forces acting on the person during the ride. Show your choice for the +x and +y directions. b. Write out Newton's 2nd law in the x and y directions. Set the RHS of the equations to zero or Mv²/R or –Mv²/R. X: y: c. What is the normal force? d. What is the magnitude and direction of the friction force that the wall exerts on the rider? e. What is the magnitude and direction of the friction force the rider exerts on the wall? f. The coefficient of static friction between the wall and the rider is µg. What is the minimum speed that the rider can move without slipping down the wall?
Consider the woman doing push-ups in the figure. She has a mass of 49.2 kg, and the distance from her feet to her center of mass is 0.96 m, while the distance from her feet to her hands is 1.75m. a. What force in newtons should the woman in the figure exert on the floor with each hand to do a push-up? Assume that she moves up at a constant speed. b. The triceps muscle at the back of her upper arm has an effective lever arm of 1.95 cm, and she exerts force on the floor at a horizontal distance of 15.5 cm from the elbow joint. Calculate the magnitude of the force in newtons for each triceps muscle. c. How much work in joules does she do if her center of mass rises 0.27 m? d. What is her useful power output, in watts, if she does 25 pushups in one minute? For the sake of simplicity, ignore any power used by her muscles lowering her body during each pushup.
O. A fisherman catches a fish and wishes to weigh it, but does not have access to a scale. He attaches a rope to the center of a 60 cm long stick. To each end, he ties his m4 kg tackle box and an M = 12 kg cooler. The fish balances the stick when it is attached 15 cm from the tackle box. What is the mass of the fish? ** m Rope M
b.You lift the child by using your elbow joint (pivot point). If the child's mass is 27 kg and distance from child to elbow joint is 0.40 m, calculate the torque?C.A ball slides with initial velocity 0.9 m/s on a frictionless surface and collides with another identical ball of mass at rest. The balls stick together after the collision. Calculate the final velocity of the balls?
A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 4.02 g coins stacked over the 16.3 cm mark, the stick is found to balance at the 25.0 cm mark. What is the mass of the meter stick? Number i Units
A fast spinning gyroscope spinning in space has a force F applied to it perpendicular to is axis of rotation at a distance r from its center of mass for a time t. a. Find an expression for how much has the orientation of the gyroscope changed in this time. b. If the angular momentum of the gyroscope about its axis of rotation is given by L=0.020 kg m' s, the force F = 0.40 N, and r = 5.0 cm, what is the angular displacement of the angular momentum vector if this torque is applied for 10 seconds? -1 %3D %3D %3D page
A hula hoop is released from rest at the top of a playground slide. In going down the slide, the center of mass of the hula hoop moves down 3.82 meters. a. If the slide were frictionless and the hula hoop did not roll, how fast would the hula hoop be going at the bottom of the slide? Include units in your answer. b. In reality, the hula hoop rolls. How fast is the hula hoop (the center of mass of the hula hoop) going at the bottom of the slide? Include units in your answer. PLEASE RESPOND IN HANDWRITING
Answer the following questions. 1. A box of weight 100 N hangs from the rope. The rope weighs 50 N and is uniform. What is the tension in the rope? a. 100 N throughout the rope b. 150 N throughout the rope It varies from 100 N at the bottom of the rope to 150 N at the с. top. A block of weight 25 kg is resting on an inclined surface with dimensions of 4 meter wide and 3 m high (See figure at the fight). Find the following: 2. Which of the following about the figure NOT true? Given wotating the axes 37 degrees clockwise. a. Fx=Ff-245sin37 b. Fx=Ff-25sin37 5m c. Fx=Ff-245cos 37 d. Fx=Ff-245sin37 3 m 3. Which of the following about the figure NOT true? Given 37 otating the axes 37 degrees clockwise. a. Fy=N-245cos37 b. Fy=N-245sin37 c. Fy=N-25cos37 d. Fy=N-25sin37 4. Find the Normal force Nacting on the object. a. 19.96 N b. - 19.86 N c. 195.66 N d. 147.44 N 4 m 5. Find the friction force Ff a. 19.96 N b. - 19.86 N c. 195.66 N d. 147.44 N 6. Find the coefficient of static friction µ. a.…