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Question 29119

posted 1 years ago

Problem 3: A ball is thrown horizontally from the top ofa 150 ft cliff at A with a speed of 50 ft/s and land sat point C. Because of a strong horizontal wind, the ball has a constant acceleration in the negative X-direction.Determine:
(a) The magnitude of the X acceleration due to the wind
(b) The velocity and speed of the particle at B where its trajectory makes an angle of 45° with the horizontal as shown
(c) The radius of curvature p of the path of the ball at B

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Question 29125

posted 1 years ago

Problem 9 (Bubble chambers): A particle of mass m = 1kg, and charge q = 1 Couloumb, is placed in a magnetic field B = 1k Tesla and thus is subjected to the effects of the Lorentz force.The force causes it to have an acceleration: à = q/m (v x b) where ỉ is the particle's velocity.m Assume that the motion of the particle remains in the x-y plane and neglect the gravity.If at t = 0 sec, the particle was at x = y = 0 m with an initial speed vo = 10 î m/s, find the equation of the path traced by the particle as it moves. Plot this path.
If along with the Lorentz force, there was also a drag force acting on the particle that causes an additional acceleration à = -củ, where the coefficient c = 0.1 Ns/m, what do you think the path will look like, approximately? Give your reasoning. Once again assume at t = 0 sec, the particle was at x = y = 0 m with an initial speed vo = 10 î m/s.We don't want you to derive the equation of the path in this case, we just want you to reason what its shape will look like.

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Question 29120

posted 1 years ago

Problem 4: The particle travels down with a constant speed of 300 mm/s along the curve given by y= 20000/x. Determine the magnitude of particle's acceleration when it is located at pointх(200mm, 100 mm) and sketch this vector on the curve.

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Question 29118

posted 1 years ago

Determine the maximum speed that the jeep can travel over the crest of the hill and not lose contact with the road. You lose contact if the normal acceleration exceeds g.

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Question 29124

posted 1 years ago

Problem 8: A boat has an initial speed of 16 ft/s. If it then increases its speed at the rate v = 1.5sft/s2, where s is the distance travelled in ft, determine the time needed for the boat to travel s =50 ft. The path of the boat is a circle of radius p = 80ft.

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Question 29117

posted 1 years ago

Problem 1: Find the magnitude of the acceleration of the particle in each of the following cases, Also, show the direction of the acceleration vector via an arrow in the figure.
(a) Spool S is sitting on the inclined rod at a distance 0.25m from A. The inclined rod is rotating about z axis, such that the speed of S is 2m/s and is constant. Note that the path traced by S is a circle as shown.
(c) A girl is sitting on a horizontal platform at a distance r = 5m from the center of the platform. The speed of the girl is 2m/s but the speed is decreasing at the rate of 0.8 m/s?.
(b) Spool S is sitting on the inclined rod at a distance 0.25m from A. Theinclined rod is rotating about z axis with a constant angular velocityof 2 rad/s.
200(1+ cos 0) with a(d) A pilot is making a loop on the curve r =constant speed of 85 m/s and is currently at point A (0 = 0).

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Question 29122

posted 1 years ago

Problem 6: The position of the particle is defined by r = 4(t – sint)î + (2t² – 3)ĵ m, where t is in seconds. Determine the speed of the particle, and its normal and tangential component of acceleration when t = 1s.

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Question 29121

posted 1 years ago

Problem 5: The motorcycle travels along the elliptical track at a constant speed v. At what point along the path will it experience the greatest magnitude of the acceleration? Determine the magnitude of that acceleration. Assume a > b.

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Question 29123

posted 1 years ago

Problem 7: Particles A and B are traveling around a circular hoop at a speed of 8 m/s at the instant shown. If the speed of B is increasing at constant 4 m/s², and the speed of A is increasing at 0.8t m/s²,determine:
(a) The time tc at which the particles will collide.
(b) The magnitude of the accelerations of both particles just before the collision occurs.

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Question 27239

posted 1 years ago

. 2 kg of oil are held within a 0.00222 m container.
a. How much does the oil weigh in Newtons, N?
b. What is the density of the oil in kg/m??
What is the specific weight of the oil in kN/m³?
d. What is the Specific Gravity of the oil?

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