Is the following statement true or false? The moment arm for a force and the line of action for the same force will always be perpendicular.

Q: Why is the CM of a 1-m length of pipe at its midpoint,whereas this is not true for your arm or leg?

A: Centre of mass

Q: Under what conditions can you apply the law of conservation of energy? Conservation of linear…

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Q: Point-masses m, are located on the x-axis as shown. Find the moment M of the system about the origin…

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Q: Force/Acceleration II. Momentum/Speed III. Power/Force Which of the above ratios gives the mass?

A: force =mass ×acceleration momentum=mv power=F•v

Q: Particles of mass 2kg and 3kg are placed a the points with position vectors (6i – j)m and (i + 4j)m…

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Q: An 77-kg jogger is heading due east at a speed of 1.2 m/s. A 69-kg jogger is heading 13 ° north of…

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Q: Direct central impact occurs between a 300N body moving to the right with velocity of 6 m/s and 150…

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Q: Consider the below Perfectly INELASTIC Agular collision and solve in given order. Disk 1 is falling:…

A: Given: Mass of small disk (m) = 3 kg Mass of large disk (M) = 6 kg. Radius of small disk (r) = 4 m.…

Q: A certain force F has a moment of 180 N-m clockwise about point O and 94 N-m counterclockwise about…

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Q: When the ________________ equal to zero the linear momentum becomes constant

A: F = dP/dt  If F is zero  P is constant

Q: Consider two scenarios. A ball of weight 10 N rolls on the floor and a block of weig 10 N slides on…

A: Sliding frictional force is greater than rolling friction.Hence applied force should be large to set…

Q: Why can't a superball released from rest reach its original height when it bounces from a rigid…

A: It is because of the inelastic collision between the superball and the rigid floor.

Q: A railroad flatcar of weight 7840 N can roll without friction along a straight horizontal track.…

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Q: When catching a fast-moving baseball, why would the player want to extend his arm far out ahead of…

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Q: Under what conditions, is linear momentum conserved? Check all that apply. There are no frictional…

A: To determine Conditions when linear momentum is conserved

Q: THE SYSTEM OF TROLLY BEAM SHOWN BELOW IS SUPPORTED BY 4 ROLLERS CALCULATE THE REACTION AT POINT A,…

A: Given : System of trolley beam is shown in the figure

Q: If the change in linear momentum of a ball is 2.2 kg.m/s at a time of 0.02s, then, what is the…

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Q: 20 kg (3,3) (-2,–2) .… + 1,-1) 12 kg 18 kg Calculate the center of mass for the distribution given…

A: From the question it is given that  m1= 20 kg at (x1,y1) = (3,3) m2= 12 kg at (x2,y2) = (1,-1) m3=…

Q: Why do the food packs, food opener, scissors and the astronauts keep on moving?

A: The astronauts, food packs, food opener and scissors are in vacuum, there is no any drag forces are…

Q: Determine the moment (Mc) of force F about point C and the perpendicular distance (d) between point…

A: Moment of force F about point C, τc→= rc→×F→ Perpendicular distance (d) between point P and the line…

Q: SCOTT. You can watch the rocket." (a) Find the torque acting on the pole. Ignore the force of…

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Q: To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg)…

A: It is given that, m1=70 kgm=10 kgl1=4 ml2=3 ml=6 mg=9.8 m/s2

Q: A body of mass 10 kg at rest is acted upon simultaneously by two forces 4 N and 3 N at right angles…

A: F1 = 4 N F2 = 3 N F1 and F2 are at right angle to each other.  Mass of body M = 10 kg Time t = 10 s…

Q: etermine the magnitude of the moment about the line "og" of a force of 11 N in the defined direction…

A: Given:- The line "og" of a force of 11 N in the defined direction from point "f" to "b" Where x =…

Q: When two bodies collide elastically, then the total momentum of the system is conserved but not the…

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Q: the two identetical freight cars roll without friction towards each ohter, in oppoite directions, on…

A: According to the conservation of mometnum we know thatmomentum before collision is equal to the…

Q: The 487 kg uniform beam is subjected to the three external loads shown. Compute the moment reaction…

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Q: Please answer all subparts. I will really upvote. Thanks

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Q: In the expression for calculating the moment of a force about a point o, Mo = r x F, r is the vector…

A: M= r×F its cross product where r is any orbitary vector and F force. Here we know dot product…

Q: A certain force F has a moment of 18Q N-m clockwise about point O and 9T N-m counterclockwise about…

A: Drw the free-body diagram of the system.

Q: In the expression for calculating the moment of a force about a point o, M, = rx F, r is the vector…

A: Given  Mo = r × F We need to tell about direction of vector Mo The vector Mo is the cross product of…

Q: Two forces P and Q pass through a point A which is 4m to the right of 3m above a moment center 0.…

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Q: An 83-kg jogger is heading due east at a speed of 2.2 m/s. A 76-kg jogger is heading 18 ° north of…

A: assume that, X-axis of coordinate system is along the East hence, X-component of momentum, Px=P1+P2x…

Q: A passenger car with a 2.5-m wheelbase has 52% of its weight on the front wheels on level ground, as…

A: The center of mass is the point inside or outside the body where entire mass of the body is…

Q: Calculate the force and moment reactions at the bolted base O of the overhead traffice-signal…

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Q: The linear impulse (I) of the force F=(3t) N for t= 4 seconds is:

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Q: When is the linear momentum of an object or system conserved?

A: The mathematical expression for the momentum is given as, P=mv Here, m is the mass of the body and v…

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”