↑ Y K रेल ← 1.00m LL 76.0kg ET ClockWise= Ет сос ETClockwise F1+122= 76.0kg FI + 2.22m counterclockwise = (76.0kg)(1.00m) 2.22m - ET counter clockwise 2.2.200 F1 = 34.23423423 kg 21 23 ka

Q: A heavy beam is 6.00m long and weighs 250N. It is hinged at one end and held so that it is 30° below…

A:

Q: Bob and Steve are building a see-saw and want it to balance when they both sit on the ends, but Bob…

A: Given : Weight of Bob is twice as Steve  Find : Where would the fulcrum have to be positioned for…

Q: At what angle to a door should one apply a force to produce the greatest torque? 0 30 45 90 O O

A:

Q: children decide to make a crane for their dogs bone (Picture attached). The boom (a piece of wood)…

A: Given: Weight of wood is 10 N Weight of bone is 5N Tension is 30.15N To find: the magnitude of the…

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

A:

Q: A plank has a length of 3.50 meters and is supported by a pivot point at the center. Justin with a…

A:

Q: A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold…

A:

Q: A plank of mass 87 kg and length 7.8 m is supported by, but not affixed to, two posts which are…

A: Let N1 and N2 be the normal reactions offered by the postLet Wp be weight of plankLet Wm  be the…

Q: A 30 m long weightless beam has an 82 kg mass resting on one end and a 64 kg mass on the other end.…

A:

Q: A uniform rod of length 100cm and mass 0.4 kg is placed on a fulcrum at a distance of 80cm from the…

A: Draw the free-body diagram of the rod.

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 24 ft long board, whose weight is 14.2 Ibs, is supported from below on each end. A 184.7 lb person…

A:

Q: 2 children decide to make a crane for their dogs bone (Picture attached). The boom (a piece of wood)…

A: Consider the following diagram:

Q: The bar is 10m long. A mass of 40kg placed at 9m from left end of bar. Where should a 60 kg mass be…

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Q: A seesaw with a length of 5 m and a mass of 40 kg is pivoted at its center. A 20kg child sits on one…

A:

Q: A plank of mass 87 kg and length 7.8 m is supported by, but not affixed to, two posts which are…

A: Given, A plank of mass 87 kg and length 7.8 m

Q: (Figure 1) shows the operation of a garlic press. The lower part of the press is held steady, and…

A: Given  r1 = 2.5 cm r2 = 12.5 cm  Upper handle force = Fupper  = 10 N

Q: A uniform rod of mass 500. g is used as a balance. We want to balance a 2.00-kg weight on the left…

A:

Q: A 49.4 kg man walks to the end of a 34.0 kg, 12.6 m long diving board, that is being supported at…

A:

Q: 11. A uniform board of mass 5 kg serves as a seesaw for two children. The child on left has a mass…

A:

Q: a) Two children are sat on a see-saw. Shelia is 35kg and is sat at the end, 2.0 m from the pivot.…

A: Mass of Shelia (m1) = 35 kg Mass of Michael (m2) = 45 kg  Shelia is sat 2 m from the pivot

Q: Two window washers, Bob and Joe, are on a 3.00-m-long, 315-N scaffold supported by two cables…

A:

Q: A 8.08m long rigid beam with a mass of 145.4kg is supported at each end. A 66.0kg student stands…

A: Length of beam                             L = 8.08 m Mass of rigid beam…

Q: A ladder with a length of 5.0 m and a weight of 650 N is placed so its base is on the ground 4.0 m…

A:

Q: A uniform beam of length L = 7.65 m and weight 545 N is carried by two men, Sam and Joe, as shown in…

A:

Q: A rod is being used as a lever as shown. The fulcrum is 1.20 m from the load and 2.40 m from the…

A:

Q: Suppose a person wishes to lift a large rock with the lever. If the rock has a mass Of 250 kg and is…

A:

Q: A 40.0 lb child sits at the end of a 10.0 ft uniform seesaw which pivots at its center. Where must a…

A: The net force acting on an object is equal to mass times the acceleration of the object. If the net…

Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.