Question

PLEASE ANSWER BOTH QUESTIONS! (1) A 2.4 kg particle moves along an x axis, being propelled...

PLEASE ANSWER BOTH QUESTIONS!

(1) A 2.4 kg particle moves along an x axis, being propelled by a variable force directed along that axis. Its position is given by x = 3.0 m + (4.0 m/s)t + ct2 - (1.8 m/s3)t3, with x in meters and t in seconds. The factor c is a constant. At t = 3.0 s, the force on the particle has a magnitude of 36 N and is in the negative direction of the axis. What is c?

(2) An amusement park ride consists of a car moving in a vertical circle on the end of a rigid boom of negligible mass. The combined weight of the car and riders is 4.5 kN, and the circle's radius is 12 m.

(a) At the top of the circle, what are the magnitude FB and direction (up or down) of the force on the car from the boom if the car's speed is v = 6.0 m/s?

(b) At the top of the circle, what are the magnitude FB and direction (up or down) of the force on the car from the boom if the car's speed is v = 16 m/s?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A particle of mass 0.0269 kg moves along the x-axis under the influence of a conservative...
A particle of mass 0.0269 kg moves along the x-axis under the influence of a conservative force. The potential energy of the particle is given by the following formula U=-A/x where A = 1,200 Jm. A) Find the work done on the particle by the conservative force in moving it from x = 10.0 m to x = 60.0 m. B) If the speed of the particle was 5.00 m/s at x = 10.0 m, what is its speed at...
PROBLEM 1 The position of a particle on the x axis is given by: x =...
PROBLEM 1 The position of a particle on the x axis is given by: x = 5.00 – 8.00 t + 2.00 t 2 with t in seconds and x in meters. a) Calculate the value of x the moment the particle momentarily stops. b) When t = 0.500 s, is the particle speeding up or slowing down? Explain. PROBLEM 2 A ball is kicked at an angle θ0 with the horizontal with an initial speed of 20.0 m /...
A conservative force F(x) acts on a 2.0 kg particle that moves along an x axis....
A conservative force F(x) acts on a 2.0 kg particle that moves along an x axis. The potential energy U(x) associated with F(x) is graphed in the figure. When the particle is at x = 2.0 m, its velocity is -1.265 m/s. What is F(2.)? (sign gives direction) Between what positions on the left and right does the particle move? Left side? Right side? What is the particle's speed at x = 7.0 m
The position of a particle moving along the x axis depends on the time according to...
The position of a particle moving along the x axis depends on the time according to the equation x = ct2 − bt3, where x is in meters and t in seconds. For the following, let the numerical values of c and b be 5.1 and 1.5, respectively. (For vector quantities, indicate direction with the sign of your answer.) (c) At what time does the particle reach its maximum positive x position? From t = 0.0 s to t =...
A particle that has an 8.9-µC charge moves with a velocity of magnitude 3.0 105 m/s...
A particle that has an 8.9-µC charge moves with a velocity of magnitude 3.0 105 m/s along the +x axis. It experiences no magnetic force, although there is a magnetic field present. The maximum possible magnetic force that the charge with the given speed could experience has a magnitude of 0.43 N. Find the magnitude and direction of the magnetic field. Note that there are two possible answers for the direction of the field.
A particle with a mass m = 2.00 kg is moving along the x axis under...
A particle with a mass m = 2.00 kg is moving along the x axis under the influence of the potential energy function U(x) = (2.00 J/m2)x2 − 32.0 J. If the particle is released from rest at the position x = 6.40 m, determine the following. (The sign is important. Be sure not to round intermediate calculations.) (a) total mechanical energy of the particle at any position: =_____ J. (b) potential energy of the particle at the position x...
1)A particle moves along the x axis. Its position is given by the equation x =...
1)A particle moves along the x axis. Its position is given by the equation x = 1.8 + 2.5t − 3.9t2 with x in meters and t in seconds. (a) Determine its position when it changes direction. (b) Determine its velocity when it returns to the position it had at t = 0? (Indicate the direction of the velocity with the sign of your answer.) 2)The height of a helicopter above the ground is given by h = 3.10t3, where...
A proton moves along the x axis according to the equation x = 50t + 10t2,...
A proton moves along the x axis according to the equation x = 50t + 10t2, where x is in meters and t is in seconds. For the time range, -8 s ≤ t ≤ 4s, answer the questions below. Show all work and explain your answers. a) Estimate the fathest distance this proton could move in the negative direction of the x axis. What is the velocity at the moment? b) In this time range, find out when the...
The figure shows a particle that carries a charge of q0 = -2.80 × 10-6 C....
The figure shows a particle that carries a charge of q0 = -2.80 × 10-6 C. It is moving along the +y axis at a speed of v = 4.82 × 106 m/s. A magnetic field of magnitude 3.48 × 10-5 T is directed along the +z axis, and an electric field of magnitude 112 N/C points along the -x axis. Determine (a) the magnitude and (b) direction (as an angle within x-y plane with respect to +x-axis in the...
1) The position of a particle moving along x direction is given by: x=8t-3t2.What is the...
1) The position of a particle moving along x direction is given by: x=8t-3t2.What is the velocity of the particle at t=2 s and what is the acceleration? 2) A roller coaster car starts from rest and descends h1= 40 m. The car has a mass of 75 kg. What is the speed at 20m while going down the hill?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT