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PHYV101: Physics 1A for Engineers (2025)

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A rock attached to a string swings in a vertical circle. Which free body diagram could correctly describe the force(s) on the rock when it is at the lowest point?
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A 50-kg child riding a Ferris wheel (radius = 10 m) travels in a vertical circle. The wheel completes one revolution every 10 s. What is the magnitude of the force on the child by the seat at the highest point on the circular path?
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The vector sum of three co-planar forces
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In the figure shown, the coefficient of kinetic friction between the block and the incline is 0.29. What is the magnitude of the acceleration of the suspended block as it falls? Disregard any pulley mass or friction in the pulley.

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Exhibit 5-2

A 4.00 kg block is suspended from the roof of an elevator. A 2.00 kg block is suspended from the 4.00 kg block. The tensions in strings 1 and 2 are labeled  T

and T2

Use this exhibit to answer the following question(s).

Refer to Exhibit 5-2. When the elevator accelerates downwards with an acceleration of 2.20 m/s2, the magnitudes of Tand T2 are
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The coefficient of kinetic friction between the surface and the larger block is 0.25, and the coefficient of kinetic friction between the surface and the smaller block is 0.40. If F = 22N and M = 1.0 kg in the figure, what is the magnitude of the acceleration of either block?

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If F = 5.0 N, what is the magnitude of the force exerted by block 2 on block 1?

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A 2.0-kg block slides on a rough horizontal surface. A force (magnitude P = 4.0 N) acting parallel to the surface is applied to the block. The magnitude of the block's acceleration is 1.2 m/s2. If P is increased to 5.0 N, determine the magnitude of the block's acceleration.
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A 1.5-kg object has a velocity of 5 m/s at t = 0. It is accelerated at a constant rate for five seconds after which it has a velocity of (6+ 12) m/s. What is the magnitude of the resultant force acting on the object during this time interval?
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A 40.0 kg child swings in a swing supported by two

Metal chains, each 3.00 m long. The tension in each chain at the lowest point

is 350 N. Find:

(i) the child’s speed at the lowest point 

(ii) the force

exerted by the seat on the child at the lowest point. (Ignore the mass of the

seat)

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