Two people carry a heavy electric motor by placing it on a light board 2.50 m long. One person lifts at one end with a force of 420 N , and the other lifts the opposite end with a force of 680 N.  weight of the motor: 1100N Suppose the board is not light but weighs 180 N , with its center of gravity at its center, and the two people each exert the same forces as before. What is the weight of the motor in this case? 920N Where is its center of gravity located?

Q: The figure shows a bicycle wheel resting against a small step whose height is h = 0.130 m. The…

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Q: A force of 72 N is applied on an object at 0.5 m distance from the pivot. The amount of force…

A: Given that:- 72 N force is applied on an object at distance 0.5m from pivot.

Q: 2. For each case, determine the total kinetic energy of the system.

A:

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A: Initial angular velocity of the disk, ωi=1045 rad/s Final angular velocity of the disk, ωf=0…

Q: what kinetic energy will it have 10.4 s later

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Q: The diagram below shows a 400 N man balancing a boy on a teeter-totter. Ignoring the weight of the…

A: An object is said to be in rotational equilibrium when its rotational velocity is constant. This is…

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A: Since the woman is in the stationary state we can consider the system to be in equilibrium. This…

Q: A 44 kg, 5.2-m-long beam is supported, but not attached to, the two posts in (Figure 1). A 25 kg boy…

A: Mass of beam, M = 44 kgLength, l = 5.2 mMass of boy, m = 25 kgBeam supported till, X = 3 m

Q: Under what conditions can a rotating body be in equilibrium? Give an example.

A: Given:  Rotating body

Q: You are attending a county fair with your friend from your physics class. While walking around the…

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Q: Use conservation of energy to determine the angular speed of the spool shown in the figure below…

A: By using energy of conservation which is total energy is conserved. For this sum of linear Kinetic…

Q: Question 1 Draw the FBD and write the equations of motion for the wheelbarrow descending the hill.…

A: When wheelbarrow moves down to hill its potential energy decreases and kinetic energy increases. At…

Q: - Inertia is mass. Rotational Inertial is mass and distance from the fulcrum (True or False) B-A…

A: A.Inertia is the resistance of an object to a change in its motion. It is a property that is…

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Q: The uniform seesaw is balanced at its center of mass, as seen below. The smaller boy on the right…

A: Write the formula for the torque. The weight of a boy will be:

Q: Question 17 A beam 6 m in length is placed on a support so that it pivots at the point of the…

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Q: A uniform ladder 10m long and weighing 350N rests against a smooth wall at an angle of 30° with the…

A: To answer: Find the horizontal force necessary at the base to keep the ladder from slipping.…

Q: Two people carry a heavy electric motor by placing it on a light board 2.00 m in length. One person…

A: The figure below depicts the given situation.

Q: The figure shows an outstretched arm (0.61 m in length) that is parallel to the floor. The arm is…

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Q: est X 000 With reference to a swinging per X + Question 17 A beam 6 m in length is placed on a…

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Q: Archimedes, a Greek philosopher, famously stated, "Give me a lever long enough and a fulcrum on…

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Q: Calculate the rotational inertia of a wheel that has a kinetic energy of 25.1 kJ when rotating at…

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Q: Part C Suppose the board is not light but weighs 220 N. with its center of gravity at its center,…

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Q: A 2.0 kg cat (not shown) is on the outer radius (R2) of a ring that can rotate about its center like…

A: The moment of the inertia of the given annular ring, which will remain constant throughout the…

Q: A circular cart-wheel spins at 2.5 rev/sec. Every point on the circumference of the wheel has the…

A: Solution: We have given that A circular cart-wheel spins at 2.5 rev/sec. Every point on the…

Q: A freely rotating pulley of radius R is shown in the figure below. On the right side of the pulley…

A: Preface: Both the horizontal and vertical forces must be zero for equilibrium, as well as the net…

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Q: Two boys and a Man decided to play in a seesaw 6 m long. The two boys seated on the left side of the…

A: As the man is right to the flucrum , he will exert an clockwise torque about the flucrum and the two…

Q: A 2.0 kg cat (not shown) is on the outer radius (R2) of a ring that can rotate about its center like…

A: Given: The mass of the cat is 2.0 kg. The inner radius of the ring is 0.80 m. The outer radius of…

Q: The cylinder shown in Fig. the coefficient of friction is 0.25 for all surfaces, determine the…

A: Given data: The coefficient of friction is μ=0.25. The weight of the cylinder is Wc=200 lb. Let,…

Q: A uniform meter stick with a mass of 175. grams is placed on a fulcrum. A weight of grams is placed…

A: To solve this we find the center mass of the two sections of the meterstick and find the moments due…

Q: 2.0 m 1.0 m 4.0 kg 1.0 kg d

A: Mass of first object (M) = 1 kg Mass of second object (m)= 4 kg Length of first object = 2 m Center…

Q: A I S40-kg automobile has a wheel base (the distance between the asles) of 280 m. The automobile's…

A: Given: Mass,m=1540kgDistance between the axle,d=2.80mAcceleration due to gravity,g=9.8m/s2Center of…

Q: Use conservation of energy to determine the angular speed of the spool shown in the figure below…

A: As per the conservation law of energy, Here, E, K, R, and U represent the system’s total energy,…

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.