Question

Notify Me Bookmark

The 0.1−1 b projectile A is subjected to a drag force of magnitude kv2, where the constant k = 0.002 lb−sec2/ft2. This drag force always opposes the velocity v. At the instant depicted, v = 100 ft/sec, θ = 45∘, and r = 400 ft. Determine the corresponding values of r and θ.

The 0.1−1 b projectile A is subjected to a drag force of magnitude kv2, where the constant k = 0.002 lb−sec2/ft2. This drag force always opposes the velocity v. At the instant depicted, v = 100 ft/sec, θ = 45∘, and r = 400 ft. Determine the corresponding values of r and θ.

Image text
The 0.1 − 1 b projectile A is subjected to a drag force of magnitude k v 2 , where the constant k = 0.002 l b − s e c 2 / f t 2 . This drag force always opposes the velocity v . At the instant depicted, v = 100 f t / s e c , θ = 45 ∘ , and r = 400 f t . Determine the corresponding values of r and θ .

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

As shown in Figure 3(a), a wooden block B with mass mB = 2.4 kg on a rough inclined plane is connected to a massless spring ( k = 160 N/m ) by a massless cord passing over a pulley P of radius R = 0.25 m and mass Mp = 0.60 kg. The angle of the inclined plane is θ = 37∘ and the coefficients of static and kinetic frictions are μs = 0.35 and μk = 0.30 respectively. The frictional force at the axle of the pulley is negligible. The pulley can be regarded as a solid disk. (a) The system is at rest and in this case, block B is on the verge of sliding down. Figure 3(a) i. Indicate (with labeled arrows) the forces acting on the pulley and the block. ii. Calculate the tension in the string and the extension of the spring. (You can assume that the tensions in the cord on either side of the pulley P are the same for this part.) (b) As shown in Figure 3(b), another wooden block A of mass mA = 1.2 kg made of the same material as block B is released from rest. It slides down a distance l down the rough inclined plane and collides with block B. The two blocks stick together and move down the incline with a common velocity v = 0.80 m/s immediately after collision and the pulley rotates. The cord does not stretch and does not slip on the pulley. Figure 3(b) i. Determine the distance l. ii. Determine the acceleration of the two blocks at the moment they move down together and the pulley starts to rotate. iii. Determine how much further down the slope the two blocks move together after they collide before the two blocks come to a momentary rest.
Solution
0 0

A sailboat is moving at a constant velocity due north, as depicted in the figure. The water exerts a drag force on the boat, where the magnitude of F→ is 325 N and θ = 33.0∘. (a) If +x is east and +y is north, find the magnitudes of n→ and p→. (Give your answers in N. ) n = N p = N (b) If +x is θ = 33.0∘ north of east and +y is θ = 33.0∘ west of north, find the magnitudes of n→ and p→. (Give your answers in N. ) n = N p = N (c) Do your answers to parts (a) and (b) agree? Yes No
Solution
0 0

A ring of mass m slides over a rod with mass M and length L, which is pivoted at one end and hangs vertically. The mass m is secured to the pivot point by a massless spring of spring constant k and unstressed length l. For θ = 0 and at equilibrium m is centered on the rod. Consider motion in a single vertical plane under the influence of gravity. 1. Show that the potential energy is V = k/2(r - L/2)^2 + mgr( 1 - cosθ) – 1/2MgLcosθ. 2. Write the system Lagrangian in terms of r and θ. 3. Obtain the differential equations of motion for r and θ. 4. In the limit of small oscillations find the normal mode frequencies. To what physical motions do these frequencies correspond?
Solution
0 0