KHomework #9 Problem 11.47 17 of 18 Review I Constants A box of negligible mass rests at the left end of a 2.50 m, 29.0 kg plank (Figure 1). The width of the box is 75.0 cm, and sand is to be distributed uniformly throughout it. The center of gravity of the nonuniform plank is 50.0 cm from the right end. Part A What mass of sand should be put into the box so that the plank balances horizontally on a fulcrum placed just below its midpoint? Express your answer with the appropriate units. ? kg Value msand Figure 1 of 1 Previous Answers Request Answer Submit Incorrect; Try Again; 3 attempts remaining 75.0 cm Center of gravity of plank Sandbox Provide Feedback Next -50.0 cm-

Q: A 30.0 kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40.0 kg child…

A: Mass of child 1 = M1 = 30 kgMass of child 2 = M2 = 40 kgMass of beam =M =  20 kgDistance of child 1…

Q: An adult horizontally pushes a doorknob with a force of magnitude 65 N. The doorknob is 90 cm away…

A: (a). When perpendicular to door  Torque = 58.5 N-m  (b). When 600  to face of door  Torque = 50.66…

Q: A uniform 150-q beam is 1 meter long. If the fulcrum is placed 20 cm from the left end of the beam,…

A: Given data:  Weight of beam (Fbeam) = 150 g Distance of beam centre of gravity from fulcrum (rb) =…

Q: Two toddlers Anne (12.0 kg) and Bob (15.0 kg) sat on both ends of a uniform 5.00-m see-saw supported…

A: Mass of Anne (m) = 12 kg Mass of Bob (m') = 15 kg Length of see saw (L) = 5 m distance of support…

Q: Assuming a single muscle group (biceps) is responsible for carrying a ball with a weight of 5 kg as…

A:

Q: You are tasked to balanced the two objects that has a mass of 5 kg and 15 kg in a lever machine that…

A: The lever is one of the six simple machines which were defined by Renaissance scientists hundreds of…

Q: A uniform ladder is tilted against a smooth wall at an angle 60⁰ with the horizontal. The mass of…

A:

Q: 13 kg horizontal beam has length L3D0.8 m. It is supported by a fulcrum at d=0.45 m from the left…

A:

Q: A door weighing 310.0 N measures 2.00 m x 3.00 m and is of uniform density; that is, the mass is…

A: The value of P is 7.50.The value of Q is 310.0.The position of forces acting on the door is shown…

Q: magnitude of the torque

A: To find the torque exerted by the beam around the point where it is fixed to the wall, we can use…

Q: A 900 N man, 165 cm tall lies on a center of gravity reaction board with his feet at the left end.…

A: Given-Weight of man BW =900 NHeight of man BH =165 cmLength of reaction board L=206 cmWeight of…

Q: A 420-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A: a) First, we need to find the Tension of the cable where the sum of all the forces acting on the…

Q: A uniform board that is 6m long and has a mass of 50kg is lying on the roof of a building. At one…

A:

Q: A uniform beam of length 3 meters and mass 10 kilograms is balanced horizontally on a pivot point. A…

A: Length of the beam (L): 3 metersMass of the beam (mbeam): 10 kilogramsForce due to the attached…

Q: The picture shows and A shape ladder. Both sides of the ladder are equal in length. This ladder is…

A:

Q: A seesaw is comprised of a 4.6 m long board that is balanced in the middle with a pivot. If a person…

A: This question is based on equilibrium of beam.`

Q: sculpture is 4.00 m tall and has its center of gravity located 1.80 m above the center of its base.…

A:

Q: We have two masses balanced on a centered beam on a fulcrum. If m1 = 10 kg, and m2 = 20 kg, what…

A: Given data The first mass is: m1 = 10 kg The second mass is: m2 = 20 kg The length of the first arm…

Q: A 400-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A:

Q: a uniform steel beam of mass 150;00 kg is held up by a steel cable that is connected to the beam a…

A: The free-body diagram of the beam is shown below. Here, H denotes the horizontal reaction exerted…

Q: Which of the following is the condition for the rotational equilibrium? The sum of the clockwise…

A:

Q: A box of negligible mass rests at the left end of a 2.00 m, 29.0 kg plank (Eigure 1). The width of…

A: The length of the plank is L = 2.00m the mass of the plank is m = 29.0kg The width of the box is w =…

Q: A 520-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A: Torque on a body is given by the cross product of force acting on it and the distance between the…

Q: A 0.19 kg horizontal beam has length L-0.8 m. It is supported by a fulcrum at d=0.50 m from the left…

A:

Q: he 3 m long uniform plank is supported by a fulcrum at the midpoint. Where should a 45 kg student…

A: Given: The length of the uniform plank is 3 m. The mass of the student is 45 kg.

Q: A man is holding a 2.80-kg ball, as shown in the figure. The distance from the elbow joint to the…

A: Given that , Mass of the ball : m = 2.80 kgDistance from the elbow joint to the ball : d = 32.5 cm…

Q: A 480-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A:

Q: A paddle for a boat is constructed of a stick of length L and a parabolic end piece. The end can be…

A: Let us consider a thin strip of width dx at a distance x from the origin. The area of the strip is…

Q: Using the concept of torque, explain why a traffic cone placed on its base is in stable equilibrium,…

A: Stable equilibrium is an equilibrium condition when the object is displaced from its equilibrium…

Q: A uniform rod has a mass of 2.53 kg and has a length of 1.17 m. It is hinged to a wall by a pivot at…

A: The free-body diagram is shown below. Here, T, m, and L are the tension, mass, and the length.

Q: A uniform plank of length 5 m and weight 200 N rests horizontally on two supports with 1.1 m of the…

A:

Q: A 520-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A:

Q: A 520-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A:

Q: A 67.0 kg adult sits at one end of a 10.0 m board, on the other end of which sits his 23.0 kg child.…

A:

Q: A 400-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A:

Q: A 460-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A:

Q: A 560-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A: From the hinge distance of sign, D = 6 m - 2 m = 4 m From the hinge distance of rod, d = 3 m Resolve…

Q: A 420-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal,…

A:

Center of Gravity of a system

The centre of gravity is a property that is based on the geometry of a rigid body or any particle. It is described as an equilibrium point or a hypothetical location where the total weight of the body is concentrated.